Product available Ships today (order by 14:00)

MW 29x10 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500
Rating: 5

cylindrical magnet

Catalog no 010053

GTIN/EAN: 5906301810520

5.00

Diameter Ø

29 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

49.54 g

Magnetization Direction

↑ axial

Load capacity

20.82 kg / 204.22 N

Magnetic Induction

351.88 mT / 3519 Gs

Coating

[NiCuNi] Nickel

see properties »

17.34 ZŁ with VAT / pcs + price for transport

14.10 ZŁ net + 23% VAT / pcs

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Technical parameters of the product - MW 29x10 / N38 - cylindrical magnet

Specification / characteristics - MW 29x10 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010053
GTIN/EAN	5906301810520
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter Ø	29 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	49.54 g
Magnetization Direction	↑ axial
Load capacity ~ ?	20.82 kg / 204.22 N
Magnetic Induction ~ ?	351.88 mT / 3519 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 29x10 / N38 - cylindrical magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Physical simulation of the magnet - data

These values represent the direct effect of a engineering analysis. Results are based on models for the material Nd₂Fe₁₄B. Operational parameters may differ. Treat these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
MW 29x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	3518 Gs 351.8 mT	20.82 kg / 20820.0 g 204.2 N	dangerous!
1 mm	3321 Gs 332.1 mT	18.55 kg / 18548.8 g 182.0 N	dangerous!
2 mm	3106 Gs 310.6 mT	16.23 kg / 16226.1 g 159.2 N	dangerous!
3 mm	2883 Gs 288.3 mT	13.98 kg / 13978.2 g 137.1 N	dangerous!
5 mm	2437 Gs 243.7 mT	9.99 kg / 9987.1 g 98.0 N	warning
10 mm	1500 Gs 150.0 mT	3.78 kg / 3783.1 g 37.1 N	warning
15 mm	905 Gs 90.5 mT	1.38 kg / 1379.2 g 13.5 N	weak grip
20 mm	563 Gs 56.3 mT	0.53 kg / 532.4 g 5.2 N	weak grip
30 mm	247 Gs 24.7 mT	0.10 kg / 102.4 g 1.0 N	weak grip
50 mm	72 Gs 7.2 mT	0.01 kg / 8.7 g 0.1 N	weak grip

Grip strength drops sharply with every subsequent millimeter of distance. Note that even the smallest gap (e.g., dirt, paint, veneer) strongly diminishes the holding power. Neodymiums operate strongest at the point of direct contact; air break nullifies the force. Analyze how rapidly the load capacity drop, when the product does not adhere directly to the metal substrate. When calculating the assembly, eliminate redundant distances.

Table 2: Shear capacity (wall)
MW 29x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	4.16 kg / 4164.0 g 40.8 N
1 mm	Stal (~0.2)	3.71 kg / 3710.0 g 36.4 N
2 mm	Stal (~0.2)	3.25 kg / 3246.0 g 31.8 N
3 mm	Stal (~0.2)	2.80 kg / 2796.0 g 27.4 N
5 mm	Stal (~0.2)	2.00 kg / 1998.0 g 19.6 N
10 mm	Stal (~0.2)	0.76 kg / 756.0 g 7.4 N
15 mm	Stal (~0.2)	0.28 kg / 276.0 g 2.7 N
20 mm	Stal (~0.2)	0.11 kg / 106.0 g 1.0 N
30 mm	Stal (~0.2)	0.02 kg / 20.0 g 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 2.0 g 0.0 N

This section defines the estimated shear load necessary to cause the shifting of the magnet downwards against a upright steel plate (assuming typical friction). This parameter depends on the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 29x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	6.25 kg / 6246.0 g 61.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.16 kg / 4164.0 g 40.8 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.08 kg / 2082.0 g 20.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	10.41 kg / 10410.0 g 102.1 N

When placing a magnet on a vertical surface (e.g., a car body), it will maintain only about 1/5 of its maximum pull force. Gravitational force as well as a weak degree of grip cause that products move down easier than they pop off the substrate. Planning a wall mount? Note that the shear force is much weaker than the maximum static pull force. On a painted metal, the magnet will slide down under a noticeably lighter cargo. Application of an anti-slip pad can effectively increase the grip.

Table 4: Material efficiency (saturation) - power losses
MW 29x10 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	5%	1.04 kg / 1041.0 g 10.2 N
1 mm	13%	2.60 kg / 2602.5 g 25.5 N
2 mm	25%	5.21 kg / 5205.0 g 51.1 N
5 mm	63%	13.01 kg / 13012.5 g 127.7 N
10 mm	100%	20.82 kg / 20820.0 g 204.2 N

A too thin steel is incapable of conduct the entire magnetic field, which wastes potential of the magnet. Should you attach a powerful product to a thin surface, the flux will penetrate right through and the pull force will drop sharply. To squeeze 100% of this neodymium's potential, you need a suitably thick piece of steel. The saturation phenomenon means that on delicate walls (e.g., car bodies), the holder shows lower pull force. We recommend selecting the steel thickness from these parameters.

Table 5: Thermal resistance (stability) - thermal limit
MW 29x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	20.82 kg / 20820.0 g 204.2 N	OK
40 °C	-2.2%	20.36 kg / 20362.0 g 199.8 N	OK
60 °C	-4.4%	19.90 kg / 19903.9 g 195.3 N
80 °C	-6.6%	19.45 kg / 19445.9 g 190.8 N
100 °C	-28.8%	14.82 kg / 14823.8 g 145.4 N

Standard neodymium magnets lose power after exceeding the maximum temperature. Avoid high temperatures – high temperature can permanently damage this magnet. As the temperature rises, the magnet's force briefly lowers. Refrain from using this product in hot environments exceeding its safe range. Ignoring the limit will cause destruction of magnetism.

*Engineering note: Thermal stability is determined by both grade, as well as the dimension ratios. Thin magnets (pancake types) risk losing magnetic properties at lower temperatures than taller cylinders. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MW 29x10 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	50.40 kg / 50399 g 494.4 N 5 016 Gs	N/A
1 mm	47.70 kg / 47704 g 468.0 N 6 845 Gs	42.93 kg / 42934 g 421.2 N ~0 Gs
2 mm	44.90 kg / 44901 g 440.5 N 6 641 Gs	40.41 kg / 40411 g 396.4 N ~0 Gs
3 mm	42.08 kg / 42082 g 412.8 N 6 429 Gs	37.87 kg / 37874 g 371.5 N ~0 Gs
5 mm	36.52 kg / 36522 g 358.3 N 5 990 Gs	32.87 kg / 32870 g 322.5 N ~0 Gs
10 mm	24.18 kg / 24176 g 237.2 N 4 873 Gs	21.76 kg / 21758 g 213.4 N ~0 Gs
20 mm	9.16 kg / 9158 g 89.8 N 2 999 Gs	8.24 kg / 8242 g 80.9 N ~0 Gs
50 mm	0.54 kg / 542 g 5.3 N 729 Gs	0.49 kg / 487 g 4.8 N ~0 Gs

Two magnets interact from a wider radius than a magnet and steel combination. The setup of magnet-to-magnet produces a massive flux and a larger range of operation. Designing a strong closure? Apply two magnets instead of a neodymium and a steel. Be careful that when attracting two neodymiums, the collision energy is huge. The repulsion force is slightly lower than the connection force, but still significant.
*The magnetic induction in repulsion mode drops to ~0 Gs at the geometric center of the gap (due to field cancellation).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 29x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	13.5 cm
Hearing aid	10 Gs (1.0 mT)	10.5 cm
Timepiece	20 Gs (2.0 mT)	8.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	6.5 cm
Car key	50 Gs (5.0 mT)	6.0 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

A strong magnetic field is a real danger to electronics as well as medical implants. These NdFeB products generate a field that disrupts operation of digital equipment. Remember: the unseen radiation penetrates the body and housings. Exceptional care must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - warning
MW 29x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.90 km/h (6.36 m/s)	1.00 J
30 mm	35.92 km/h (9.98 m/s)	2.47 J
50 mm	46.24 km/h (12.85 m/s)	4.09 J
100 mm	65.38 km/h (18.16 m/s)	8.17 J

NdFeB products are very brittle – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Striking energy can destroy the magnet or injury to skin. Hold the magnet firmly during mounting so it doesn't hit violently against the steel surface. A collision at high speed ends with a crack of the neodymium. Use safety goggles when handling with large magnets.

Table 9: Surface protection spec
MW 29x10 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

Neodymium magnets are highly susceptible to corrosion without proper protection. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MW 29x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	24 471 Mx	244.7 µWb
P_c Coefficient	0.45	Low (Flat)

Total magnetic flux emitted by the magnet pole. Essential parameter in coil applications as well as sensors. P_c value determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MW 29x10 / N38

Environment	Effective steel pull	Effect
Air (land)	20.82 kg	Standard
Water (riverbed)	23.84 kg (+3.02 kg Buoyancy gain)	+14.5%

Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Sliding resistance

*Caution: On a vertical surface, the magnet holds just approx. 20-30% of its max power.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) significantly limits the holding force.

3. Temperature resistance

*For standard magnets, the max working temp is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.45

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Engineering data and GPSR

Chemical composition

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Environmental data

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 010053-2025

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The presented product is an extremely powerful cylindrical magnet, composed of modern NdFeB material, which, at dimensions of Ø29x10 mm, guarantees optimal power. The MW 29x10 / N38 model boasts a tolerance of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 20.82 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is perfect for building generators, advanced Hall effect sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 204.22 N with a weight of only 49.54 g, this rod is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are strong enough for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø29x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø29x10 mm, which, at a weight of 49.54 g, makes it an element with impressive magnetic energy density. The value of 204.22 N means that the magnet is capable of holding a weight many times exceeding its own mass of 49.54 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 29 mm. Such an arrangement is standard when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Advantages as well as disadvantages of neodymium magnets.

Advantages

In addition to their pulling strength, neodymium magnets provide the following advantages:

They do not lose magnetism, even over nearly 10 years – the decrease in strength is only ~1% (based on measurements),
They possess excellent resistance to magnetic field loss as a result of external magnetic sources,
Thanks to the shimmering finish, the surface of Ni-Cu-Ni, gold-plated, or silver gives an aesthetic appearance,
Neodymium magnets generate maximum magnetic induction on a their surface, which ensures high operational effectiveness,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures approaching 230°C and above...
Thanks to the option of flexible molding and customization to custom projects, NdFeB magnets can be manufactured in a broad palette of shapes and sizes, which expands the range of possible applications,
Significant place in innovative solutions – they are commonly used in data components, electric motors, precision medical tools, also technologically advanced constructions.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Problematic aspects of neodymium magnets: tips and applications.

They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
Due to limitations in creating nuts and complex forms in magnets, we propose using cover - magnetic mount.
Health risk resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these products can complicate diagnosis medical when they are in the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

The declared magnet strength represents the peak performance, recorded under ideal test conditions, specifically:

on a block made of structural steel, effectively closing the magnetic flux
possessing a massiveness of min. 10 mm to ensure full flux closure
with a plane free of scratches
under conditions of no distance (surface-to-surface)
under axial force vector (90-degree angle)
at room temperature

Practical lifting capacity: influencing factors

During everyday use, the actual lifting capacity depends on a number of factors, presented from the most important:

Distance (between the magnet and the metal), as even a tiny clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, rust or dirt).
Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Steel thickness – too thin sheet does not accept the full field, causing part of the power to be wasted into the air.
Metal type – different alloys reacts the same. Alloy additives worsen the attraction effect.
Plate texture – smooth surfaces ensure maximum contact, which improves force. Uneven metal reduce efficiency.
Thermal environment – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

Safe handling of neodymium magnets

Operating temperature

Avoid heat. Neodymium magnets are sensitive to temperature. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Caution required

Exercise caution. Neodymium magnets act from a long distance and connect with huge force, often quicker than you can move away.

Magnet fragility

Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. Wear goggles.

Fire warning

Powder created during cutting of magnets is flammable. Do not drill into magnets unless you are an expert.

No play value

Only for adults. Tiny parts can be swallowed, causing intestinal necrosis. Store out of reach of kids and pets.

GPS and phone interference

Remember: rare earth magnets produce a field that disrupts precision electronics. Maintain a separation from your phone, device, and GPS.

Pinching danger

Protect your hands. Two powerful magnets will snap together instantly with a force of massive weight, destroying everything in their path. Exercise extreme caution!

Cards and drives

Intense magnetic fields can destroy records on payment cards, HDDs, and storage devices. Keep a distance of at least 10 cm.

Nickel coating and allergies

A percentage of the population experience a contact allergy to Ni, which is the common plating for neodymium magnets. Frequent touching might lead to a rash. We suggest use protective gloves.

Warning for heart patients

For implant holders: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or request help to work with the magnets.

Important! Need more info? Check our post: Are neodymium magnets dangerous?

MW 29x10 / N38 - cylindrical magnet

Technical parameters of the product - MW 29x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the magnet - data

Table 1: Static pull force (force vs distance) - characteristics MW 29x10 / N38

Table 2: Shear capacity (wall) MW 29x10 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 29x10 / N38

Table 4: Material efficiency (saturation) - power losses MW 29x10 / N38

Table 5: Thermal resistance (stability) - thermal limit MW 29x10 / N38

Table 6: Two magnets (attraction) - field range MW 29x10 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 29x10 / N38

Table 8: Dynamics (kinetic energy) - warning MW 29x10 / N38

Table 9: Surface protection spec MW 29x10 / N38

Table 10: Electrical data (Pc) MW 29x10 / N38

Table 11: Hydrostatics and buoyancy MW 29x10 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Temperature resistance

4. Demagnetization curve and operating point (B-H)

Chemical composition

Environmental data

Magnet pull force

Magnetic Induction

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MPL 10x10x3 / N38 - lamellar magnet

SMZR 32x175 / N52 - magnetic separator with handle

Advantages as well as disadvantages of neodymium magnets.

Advantages

Weaknesses

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

Practical lifting capacity: influencing factors

Safe handling of neodymium magnets

Operating temperature

Caution required

Magnet fragility

Fire warning

No play value

GPS and phone interference

Pinching danger

Cards and drives

Nickel coating and allergies

Warning for heart patients

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - characteristics
MW 29x10 / N38

Table 2: Shear capacity (wall)
MW 29x10 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 29x10 / N38

Table 4: Material efficiency (saturation) - power losses
MW 29x10 / N38

Table 5: Thermal resistance (stability) - thermal limit
MW 29x10 / N38

Table 6: Two magnets (attraction) - field range
MW 29x10 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MW 29x10 / N38

Table 8: Dynamics (kinetic energy) - warning
MW 29x10 / N38

Table 9: Surface protection spec
MW 29x10 / N38

Table 10: Electrical data (P_c)
MW 29x10 / N38

Table 11: Hydrostatics and buoyancy
MW 29x10 / N38