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MW 18.9x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010036

GTIN/EAN: 5906301810353

5.00

Diameter Ø

18.9 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

21.04 g

Magnetization Direction

→ diametrical

Load capacity

11.68 kg / 114.54 N

Magnetic Induction

450.35 mT / 4503 Gs

Coating

[NiCuNi] Nickel

see properties »

11.07 ZŁ with VAT / pcs + price for transport

9.00 ZŁ net + 23% VAT / pcs

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Specifications as well as structure of neodymium magnets can be tested with our online calculation tool.

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Technical details - MW 18.9x10 / N38 - cylindrical magnet

Specification / characteristics - MW 18.9x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010036
GTIN/EAN 5906301810353
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 18.9 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 21.04 g
Magnetization Direction → diametrical
Load capacity ~ ? 11.68 kg / 114.54 N
Magnetic Induction ~ ? 450.35 mT / 4503 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 18.9x10 / 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

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

Technical modeling of the product - data

Presented information represent the outcome of a mathematical calculation. Values were calculated on models for the class Nd2Fe14B. Real-world parameters might slightly differ from theoretical values. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (force vs gap) - power drop
MW 18.9x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4502 Gs
450.2 mT
 11.68 kg / 25.75 lbs
11680.0 g / 114.6 N
 critical level
1 mm 4050 Gs
405.0 mT
 9.46 kg / 20.85 lbs
9455.2 g / 92.8 N
 warning
2 mm 3587 Gs
358.7 mT
 7.42 kg / 16.35 lbs
7416.3 g / 72.8 N
 warning
3 mm 3139 Gs
313.9 mT
 5.68 kg / 12.52 lbs
5678.8 g / 55.7 N
 warning
5 mm 2346 Gs
234.6 mT
 3.17 kg / 6.99 lbs
3172.5 g / 31.1 N
 warning
10 mm 1100 Gs
110.0 mT
 0.70 kg / 1.54 lbs
696.7 g / 6.8 N
 weak grip
15 mm 554 Gs
55.4 mT
 0.18 kg / 0.39 lbs
176.7 g / 1.7 N
 weak grip
20 mm 308 Gs
30.8 mT
 0.05 kg / 0.12 lbs
54.6 g / 0.5 N
 weak grip
30 mm 120 Gs
12.0 mT
 0.01 kg / 0.02 lbs
8.3 g / 0.1 N
 weak grip
50 mm 32 Gs
3.2 mT
 0.00 kg / 0.00 lbs
0.6 g / 0.0 N
 weak grip
Pulling power decreases significantly with every subsequent millimeter of spacing. Remember that even a microscopic distance (e.g., dirt, varnish, dust) significantly reduces the pull force. Magnets operate strongest during direct contact; air break nullifies the power. Observe how quickly the pull force plummet, when the magnet does not adhere flatly to the metal substrate. When calculating the arrangement, eliminate additional spacers.

Table 2: Slippage force (wall)
MW 18.9x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 2.34 kg / 5.15 lbs
2336.0 g / 22.9 N
1 mm Stal (~0.2) 1.89 kg / 4.17 lbs
1892.0 g / 18.6 N
2 mm Stal (~0.2) 1.48 kg / 3.27 lbs
1484.0 g / 14.6 N
3 mm Stal (~0.2) 1.14 kg / 2.50 lbs
1136.0 g / 11.1 N
5 mm Stal (~0.2) 0.63 kg / 1.40 lbs
634.0 g / 6.2 N
10 mm Stal (~0.2) 0.14 kg / 0.31 lbs
140.0 g / 1.4 N
15 mm Stal (~0.2) 0.04 kg / 0.08 lbs
36.0 g / 0.4 N
20 mm Stal (~0.2) 0.01 kg / 0.02 lbs
10.0 g / 0.1 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
The following data shows the approximate shear load sufficient to start the sliding of the magnet vertically against a upright metal surface (considering typical friction). This parameter depends on the gap size between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 18.9x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
3.50 kg / 7.72 lbs
3504.0 g / 34.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.34 kg / 5.15 lbs
2336.0 g / 22.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.17 kg / 2.57 lbs
1168.0 g / 11.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
5.84 kg / 12.87 lbs
5840.0 g / 57.3 N
When hanging a magnet on a vertical surface (e.g., a fridge), it will maintain barely approx. 20%-30% of its maximum pull force. Gravitational force as well as a low friction coefficient mean that products slide down faster than they pull off. Planning a wall mount? Remember that the sliding force is noticeably lower than the maximum static pull force. On a slippery surface, the magnet will slide down under a significantly smaller cargo. Utilizing a rubberized layer can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 18.9x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 0.58 kg / 1.29 lbs
584.0 g / 5.7 N
1 mm
13%
 1.46 kg / 3.22 lbs
1460.0 g / 14.3 N
2 mm
25%
 2.92 kg / 6.44 lbs
2920.0 g / 28.6 N
3 mm
38%
 4.38 kg / 9.66 lbs
4380.0 g / 43.0 N
5 mm
63%
 7.30 kg / 16.09 lbs
7300.0 g / 71.6 N
10 mm
100%
 11.68 kg / 25.75 lbs
11680.0 g / 114.6 N
11 mm
100%
 11.68 kg / 25.75 lbs
11680.0 g / 114.6 N
12 mm
100%
 11.68 kg / 25.75 lbs
11680.0 g / 114.6 N
A thin sheet is not enough to conduct the entire magnetic field, which squanders power of the magnet. Should you install a neodymium to a too thin substrate, the flux will penetrate right through and the attraction force will be weaker. To squeeze the maximum of this magnet's potential, you need a suitably thick backing of metal. The saturation effect causes that on thin elements (e.g., appliance housings), the magnet holds weaker. We advise picking the steel thickness according to the table below.

Table 5: Working in heat (material behavior) - thermal limit
MW 18.9x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 11.68 kg / 25.75 lbs
11680.0 g / 114.6 N
 OK
40 °C -2.2% 11.42 kg / 25.18 lbs
11423.0 g / 112.1 N
 OK
60 °C -4.4% 11.17 kg / 24.62 lbs
11166.1 g / 109.5 N
 OK
80 °C -6.6% 10.91 kg / 24.05 lbs
10909.1 g / 107.0 N
100 °C -28.8% 8.32 kg / 18.33 lbs
8316.2 g / 81.6 N
Standard neodymium magnets irreversibly lose parameters after exceeding the maximum temperature. Avoid high temperatures – high temperature can permanently damage this product. As the temperature rises, the magnet's force momentarily drops. Refrain from using this product near heat sources higher than its operating temperature limit. Ignoring the limit will cause irreversible degradation of magnetism.
*Technical advisory: Thermal stability depends not only on the material grade, as well as the dimension ratios. Flat magnets (low permeance coefficient) may lose charge permanently under lower heat stress compared to rod magnets. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 18.9x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 35.05 kg / 77.28 lbs
5 600 Gs
5.26 kg / 11.59 lbs
5258 g / 51.6 N
 N/A
1 mm 31.70 kg / 69.88 lbs
8 562 Gs
4.75 kg / 10.48 lbs
4754 g / 46.6 N
 28.53 kg / 62.89 lbs
~0 Gs
2 mm 28.38 kg / 62.56 lbs
8 101 Gs
4.26 kg / 9.38 lbs
4256 g / 41.8 N
 25.54 kg / 56.30 lbs
~0 Gs
3 mm 25.22 kg / 55.59 lbs
7 636 Gs
3.78 kg / 8.34 lbs
3782 g / 37.1 N
 22.69 kg / 50.03 lbs
~0 Gs
5 mm 19.53 kg / 43.05 lbs
6 720 Gs
2.93 kg / 6.46 lbs
2929 g / 28.7 N
 17.57 kg / 38.75 lbs
~0 Gs
10 mm 9.52 kg / 20.99 lbs
4 692 Gs
1.43 kg / 3.15 lbs
1428 g / 14.0 N
 8.57 kg / 18.89 lbs
~0 Gs
20 mm 2.09 kg / 4.61 lbs
2 199 Gs
0.31 kg / 0.69 lbs
314 g / 3.1 N
 1.88 kg / 4.15 lbs
~0 Gs
50 mm 0.06 kg / 0.13 lbs
372 Gs
0.01 kg / 0.02 lbs
9 g / 0.1 N
 0.05 kg / 0.12 lbs
~0 Gs
60 mm 0.03 kg / 0.06 lbs
241 Gs
0.00 kg / 0.01 lbs
4 g / 0.0 N
 0.02 kg / 0.05 lbs
~0 Gs
70 mm 0.01 kg / 0.03 lbs
164 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
 0.01 kg / 0.02 lbs
~0 Gs
80 mm 0.01 kg / 0.01 lbs
116 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
90 mm 0.00 kg / 0.01 lbs
86 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
100 mm 0.00 kg / 0.00 lbs
65 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two strong neodymiums attract each other from a wider radius than a neodymium and metal combination. Such a system of magnet-to-magnet generates a stronger field and a further horizon of performance. Designing a strong closure? Apply two magnets instead of one magnet and a steel. Exercise caution that when connecting a pair of magnets, the pinch force is massive. The repulsion force is marginally weaker than the connection force, but still large.
*Field value for N-N configuration is approximately ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Note: Figures apply to friction force of a pair of identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - warnings
MW 18.9x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 10.0 cm
Hearing aid 10 Gs (1.0 mT) 8.0 cm
Timepiece 20 Gs (2.0 mT) 6.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 5.0 cm
Remote 50 Gs (5.0 mT) 4.5 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
Powerful magnet radiation is a large risk to electronic devices as well as pacemakers. These magnets produce a flux that destroys function of digital equipment. Notice: the invisible magnetic field acts through matter and housings. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, remotes, membranes, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MW 18.9x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.63 km/h
(6.84 m/s)
 0.49 J
30 mm 41.18 km/h
(11.44 m/s)
 1.38 J
50 mm 53.13 km/h
(14.76 m/s)
 2.29 J
100 mm 75.14 km/h
(20.87 m/s)
 4.58 J
Magnetic elements are delicate – a collision with steel risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Impact energy can trigger coating fragments or painful pinches to fingers. Always hold the magnet during mounting so it doesn't hit violently against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when playing with large magnets.

Table 9: Anti-corrosion coating durability
MW 18.9x10 / 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)
For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Pc)
MW 18.9x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 12 775 Mx 127.7 µWb
Pc Coefficient 0.61 High (Stable)
Flux value emitted by the pole surface. Key data in coil applications and motors. The Pc coefficient determines the working geometry.

Table 11: Physics of underwater searching
MW 18.9x10 / N38

Environment Effective steel pull Effect
Air (land) 11.68 kg Standard
Water (riverbed) 13.37 kg
(+1.69 kg buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Contrary to myths, water does not block the magnetic field. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.
1. Shear force

*Note: On a vertical surface, the magnet retains only a fraction of its nominal pull.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) significantly limits the holding force.

3. Temperature resistance

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.61

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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 Pc (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 Pc 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
Elemental analysis
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%
Sustainability
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: 010036-2026
Quick Unit Converter
Force (pull)
Magnetic Induction
Input your figure in one of the inputs, and the remaining fields will convert in real-time.

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The offered product is an extremely powerful cylinder magnet, made from advanced NdFeB material, which, at dimensions of Ø18.9x10 mm, guarantees the highest energy density. The MW 18.9x10 / N38 component boasts high dimensional repeatability and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 11.68 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 114.54 N with a weight of only 21.04 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 18.9.1 mm) using two-component epoxy glues. To ensure stability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are suitable for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø18.9x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
This model is characterized by dimensions Ø18.9x10 mm, which, at a weight of 21.04 g, makes it an element with impressive magnetic energy density. The value of 114.54 N means that the magnet is capable of holding a weight many times exceeding its own mass of 21.04 g. The product has a [NiCuNi] coating, which secures it 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 18.9 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 diametrically if your project requires it.

Strengths and weaknesses of neodymium magnets.

Pros

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • Their strength is maintained, and after approximately 10 years it drops only by ~1% (according to research),
  • They possess excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
  • In other words, due to the glossy finish of silver, the element gains a professional look,
  • They feature high magnetic induction at the operating surface, which affects their effectiveness,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Possibility of detailed modeling as well as optimizing to specific conditions,
  • Fundamental importance in high-tech industry – they are used in magnetic memories, electromotive mechanisms, advanced medical instruments, as well as technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Weaknesses

Characteristics of disadvantages of neodymium magnets: tips and applications.
  • At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
  • Limited possibility of making nuts in the magnet and complicated shapes - preferred is casing - magnet mounting.
  • Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, small components of these products can disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Maximum lifting force for a neodymium magnet – what contributes to it?

The load parameter shown concerns the peak performance, obtained under laboratory conditions, specifically:
  • on a plate made of structural steel, perfectly concentrating the magnetic flux
  • whose thickness equals approx. 10 mm
  • characterized by lack of roughness
  • without the slightest insulating layer between the magnet and steel
  • under axial force direction (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Key elements affecting lifting force

In real-world applications, the actual lifting capacity depends on several key aspects, listed from crucial:
  • Clearance – existence of foreign body (paint, tape, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of nominal force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Plate material – mild steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
  • Surface structure – the more even the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
  • Thermal factor – hot environment reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was assessed with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate lowers the holding force.

Warnings
Warning for heart patients

Medical warning: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Precision electronics

A strong magnetic field disrupts the functioning of compasses in smartphones and navigation systems. Do not bring magnets near a device to prevent damaging the sensors.

Adults only

Neodymium magnets are not toys. Eating multiple magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and requires urgent medical intervention.

Heat sensitivity

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its properties and strength.

Protective goggles

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Collision of two magnets leads to them shattering into shards.

Respect the power

Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Fire warning

Powder produced during machining of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Bone fractures

Large magnets can crush fingers instantly. Do not place your hand betwixt two attracting surfaces.

Metal Allergy

Certain individuals have a contact allergy to nickel, which is the common plating for NdFeB magnets. Extended handling can result in skin redness. We suggest wear protective gloves.

Safe distance

Very strong magnetic fields can destroy records on payment cards, hard drives, and storage devices. Stay away of min. 10 cm.

Safety First! Want to know more? Check our post: Why are neodymium magnets dangerous?