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MW 10x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010006

GTIN/EAN: 5906301810056

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

1.18 g

Magnetization Direction

↑ axial

Load capacity

1.27 kg / 12.50 N

Magnetic Induction

230.11 mT / 2301 Gs

Coating

[NiCuNi] Nickel

product specifications »

0.467 ZŁ with VAT / pcs + price for transport

0.380 ZŁ net + 23% VAT / pcs

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Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Detailed specification - MW 10x2 / N38 - cylindrical magnet

Specification / characteristics - MW 10x2 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010006
GTIN/EAN 5906301810056
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 10 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 1.18 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.27 kg / 12.50 N
Magnetic Induction ~ ? 230.11 mT / 2301 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x2 / 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

Engineering simulation of the magnet - technical parameters

Presented values constitute the outcome of a physical simulation. Values are based on models for the material Nd2Fe14B. Actual parameters may deviate from the simulation results. Please consider these data as a supplementary guide for designers.

Table 1: Static force (pull vs gap) - characteristics
MW 10x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2300 Gs
230.0 mT
 1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
 weak grip
1 mm 1974 Gs
197.4 mT
 0.94 kg / 2.06 LBS
935.3 g / 9.2 N
 weak grip
2 mm 1570 Gs
157.0 mT
 0.59 kg / 1.31 LBS
592.1 g / 5.8 N
 weak grip
3 mm 1194 Gs
119.4 mT
 0.34 kg / 0.75 LBS
342.3 g / 3.4 N
 weak grip
5 mm 661 Gs
66.1 mT
 0.10 kg / 0.23 LBS
104.9 g / 1.0 N
 weak grip
10 mm 178 Gs
17.8 mT
 0.01 kg / 0.02 LBS
7.6 g / 0.1 N
 weak grip
15 mm 66 Gs
6.6 mT
 0.00 kg / 0.00 LBS
1.1 g / 0.0 N
 weak grip
20 mm 31 Gs
3.1 mT
 0.00 kg / 0.00 LBS
0.2 g / 0.0 N
 weak grip
30 mm 10 Gs
1.0 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 weak grip
50 mm 2 Gs
0.2 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 weak grip
Pulling power drops drastically per each millimeter of spacing. Remember that every additional insulation layer (e.g., dirt, varnish, veneer) significantly reduces the pull force. Magnetic products work most effectively during direct contact; air break kills the force. See how rapidly the load capacity plummet, when the magnet does not touch tightly to the steel surface. When calculating the arrangement, eliminate unnecessary gaps.

Table 2: Vertical hold (wall)
MW 10x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.25 kg / 0.56 LBS
254.0 g / 2.5 N
1 mm Stal (~0.2) 0.19 kg / 0.41 LBS
188.0 g / 1.8 N
2 mm Stal (~0.2) 0.12 kg / 0.26 LBS
118.0 g / 1.2 N
3 mm Stal (~0.2) 0.07 kg / 0.15 LBS
68.0 g / 0.7 N
5 mm Stal (~0.2) 0.02 kg / 0.04 LBS
20.0 g / 0.2 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
The table below calculates the estimated shear load required to cause the downward movement of the magnet down on a vertical steel wall (assuming standard friction coefficient). This value is a function of the air gap between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 10x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.38 kg / 0.84 LBS
381.0 g / 3.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.25 kg / 0.56 LBS
254.0 g / 2.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.13 kg / 0.28 LBS
127.0 g / 1.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.64 kg / 1.40 LBS
635.0 g / 6.2 N
When placing a element on a upright wall (e.g., a car body), it you can count on just about 20%-30% of its nominal power. Gravity as well as a low friction coefficient mean that magnets move down easier than they detach. Designing a vertical fastening? Note that the sliding force is noticeably lower than the maximum static pull force. On a smooth steel, the holder will give way down under a significantly smaller cargo. Application of an anti-slip coating can significantly increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MW 10x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.13 kg / 0.28 LBS
127.0 g / 1.2 N
1 mm
25%
 0.32 kg / 0.70 LBS
317.5 g / 3.1 N
2 mm
50%
 0.64 kg / 1.40 LBS
635.0 g / 6.2 N
3 mm
75%
 0.95 kg / 2.10 LBS
952.5 g / 9.3 N
5 mm
100%
 1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
10 mm
100%
 1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
11 mm
100%
 1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
12 mm
100%
 1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
A too thin steel is incapable of focus the full magnetic flux, which squanders power of the holder. If you mount a strong magnet to a weak sheet, the flux will pass right through and the pull force will drop sharply. To squeeze full efficiency of this magnet's potential, you require a sufficiently solid backing of steel. The saturation effect causes that on delicate walls (e.g., car bodies), the product shows lower pull force. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal stability (stability) - resistance threshold
MW 10x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
 OK
40 °C -2.2% 1.24 kg / 2.74 LBS
1242.1 g / 12.2 N
 OK
60 °C -4.4% 1.21 kg / 2.68 LBS
1214.1 g / 11.9 N
80 °C -6.6% 1.19 kg / 2.62 LBS
1186.2 g / 11.6 N
100 °C -28.8% 0.90 kg / 1.99 LBS
904.2 g / 8.9 N
Ordinary NdFeB products change their properties power after exceeding the maximum temperature. Protect against heat – excessive heat can permanently destroy this magnet. With increasing heat, the neodymium's force temporarily decreases. Do not use this product in hot environments exceeding its safe range. Too high temperature will cause irreversible degradation of magnetic properties.
*Engineering note: Temperature resistance is determined by both grade, as well as the dimension ratios. Flat magnets (low Pc) may lose charge permanently under lower heat stress compared to rod magnets. Red status in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MW 10x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.56 kg / 5.65 LBS
3 867 Gs
0.38 kg / 0.85 LBS
384 g / 3.8 N
 N/A
1 mm 2.25 kg / 4.96 LBS
4 312 Gs
0.34 kg / 0.74 LBS
338 g / 3.3 N
 2.03 kg / 4.46 LBS
~0 Gs
2 mm 1.89 kg / 4.16 LBS
3 948 Gs
0.28 kg / 0.62 LBS
283 g / 2.8 N
 1.70 kg / 3.74 LBS
~0 Gs
3 mm 1.52 kg / 3.36 LBS
3 548 Gs
0.23 kg / 0.50 LBS
229 g / 2.2 N
 1.37 kg / 3.02 LBS
~0 Gs
5 mm 0.92 kg / 2.02 LBS
2 750 Gs
0.14 kg / 0.30 LBS
137 g / 1.3 N
 0.82 kg / 1.82 LBS
~0 Gs
10 mm 0.21 kg / 0.47 LBS
1 322 Gs
0.03 kg / 0.07 LBS
32 g / 0.3 N
 0.19 kg / 0.42 LBS
~0 Gs
20 mm 0.02 kg / 0.03 LBS
355 Gs
0.00 kg / 0.01 LBS
2 g / 0.0 N
 0.01 kg / 0.03 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
33 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
20 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
13 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.00 LBS
9 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.00 LBS
6 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
5 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnetic products attract each other from a wider radius than a magnet and steel setup. The setup of two magnets produces a massive flux and a larger range of performance. Planning to create a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when connecting a pair of magnets, the pinch force is extreme. The repulsion force is marginally weaker than the connection force, but still significant.
*Field value in repulsion mode drops to ~0 Gs at the midpoint of the gap (resulting from vector opposition).
Attention: Figures refer to friction force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - precautionary measures
MW 10x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.0 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Mechanical watch 20 Gs (2.0 mT) 2.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.0 cm
Car key 50 Gs (5.0 mT) 2.0 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Extremely neodym field poses a large risk to IT equipment and medical implants. These neodymiums produce a flux that disrupts operation of digital equipment. Notice: the unseen radiation penetrates the body and plastic. Exceptional care must be exercised by people with cochlear implants and insulin pumps. The risk also applies to: mechanical watches, remotes, speakers, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MW 10x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 33.21 km/h
(9.22 m/s)
 0.05 J
30 mm 57.31 km/h
(15.92 m/s)
 0.15 J
50 mm 73.98 km/h
(20.55 m/s)
 0.25 J
100 mm 104.63 km/h
(29.06 m/s)
 0.50 J
Magnetic elements are prone to chipping – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely becomes dangerous. Impact energy can cause material chips or painful pinches to skin. Be sure to control the product during mounting so it doesn't slam with momentum against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when handling with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 10x2 / 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)
The following table defines the conditions under which this product can be safely used. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MW 10x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 097 Mx 21.0 µWb
Pc Coefficient 0.29 Low (Flat)
Total magnetic flux emitted by the magnet pole. Essential parameter when building generators and motors. The Pc coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 10x2 / N38

Environment Effective steel pull Effect
Air (land) 1.27 kg Standard
Water (riverbed) 1.45 kg
(+0.18 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!
In water, the magnet feels stronger thanks to Archimedes' principle. Buoyancy helps in lifting finds.
1. Shear force

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

2. Efficiency vs thickness

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.29

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 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
Material specification
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: 010006-2026
Measurement Calculator
Force (pull)
Magnetic Induction
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The offered product is an incredibly powerful cylindrical magnet, made from advanced NdFeB material, which, with dimensions of Ø10x2 mm, guarantees optimal power. The MW 10x2 / N38 component boasts high dimensional repeatability and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 1.27 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid 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 automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 12.50 N with a weight of only 1.18 g, this cylindrical magnet is indispensable in miniature devices 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 stability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø10x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 10 mm and height 2 mm. The key parameter here is the lifting capacity amounting to approximately 1.27 kg (force ~12.50 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 2 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable 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.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • Their magnetic field remains stable, and after approximately ten years it drops only by ~1% (theoretically),
  • Neodymium magnets are highly resistant to magnetic field loss caused by external magnetic fields,
  • Thanks to the smooth finish, the coating of nickel, gold-plated, or silver gives an professional appearance,
  • They show high magnetic induction at the operating surface, making them more effective,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Possibility of detailed creating and modifying to complex requirements,
  • Key role in advanced technology sectors – they are utilized in hard drives, motor assemblies, precision medical tools, as well as other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in compact constructions

Cons

Problematic aspects of neodymium magnets and proposals for their use:
  • At very strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • NdFeB magnets lose power 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.
  • We recommend cover - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complex forms.
  • Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these products are able to complicate diagnosis medical when they are in the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

Holding force of 1.27 kg is a result of laboratory testing performed under standard conditions:
  • using a base made of low-carbon steel, serving as a magnetic yoke
  • with a thickness minimum 10 mm
  • with a plane free of scratches
  • with zero gap (without paint)
  • under axial force vector (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

Effective lifting capacity is affected by specific conditions, including (from priority):
  • Clearance – the presence of any layer (paint, dirt, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Metal type – different alloys reacts the same. Alloy additives worsen the attraction effect.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity was determined with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Safe handling of neodymium magnets
Crushing force

Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, crushing everything in their path. Exercise extreme caution!

GPS Danger

Note: neodymium magnets generate a field that interferes with precision electronics. Keep a separation from your mobile, device, and navigation systems.

Allergic reactions

Certain individuals experience a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Extended handling might lead to a rash. We recommend use protective gloves.

Do not underestimate power

Use magnets consciously. Their immense force can shock even experienced users. Plan your moves and do not underestimate their force.

ICD Warning

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Choking Hazard

Product intended for adults. Small elements pose a choking risk, leading to serious injuries. Store out of reach of kids and pets.

Safe distance

Avoid bringing magnets close to a wallet, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Fire risk

Powder created during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Fragile material

NdFeB magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them breaking into small pieces.

Permanent damage

Standard neodymium magnets (grade N) lose power when the temperature goes above 80°C. Damage is permanent.

Security! Need more info? Read our article: Are neodymium magnets dangerous?