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MW 25x6 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010050

GTIN/EAN: 5906301810490

5.00

Diameter Ø

25 mm [±0,1 mm]

Height

6 mm [±0,1 mm]

Weight

22.09 g

Magnetization Direction

↑ axial

Load capacity

10.27 kg / 100.71 N

Magnetic Induction

268.21 mT / 2682 Gs

Coating

[NiCuNi] Nickel

technical details »

7.40 ZŁ with VAT / pcs + price for transport

6.02 ZŁ net + 23% VAT / pcs

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Technical data - MW 25x6 / N38 - cylindrical magnet

Specification / characteristics - MW 25x6 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010050
GTIN/EAN 5906301810490
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 25 mm [±0,1 mm]
Height 6 mm [±0,1 mm]
Weight 22.09 g
Magnetization Direction ↑ axial
Load capacity ~ ? 10.27 kg / 100.71 N
Magnetic Induction ~ ? 268.21 mT / 2682 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 25x6 / 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

Physical analysis of the magnet - technical parameters

Presented data are the outcome of a physical simulation. Values are based on models for the class Nd2Fe14B. Actual parameters may deviate from the simulation results. Use these calculations as a reference point for designers.

Table 1: Static pull force (pull vs distance) - interaction chart
MW 25x6 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2682 Gs
268.2 mT
 10.27 kg / 22.64 LBS
10270.0 g / 100.7 N
 critical level
1 mm 2535 Gs
253.5 mT
 9.18 kg / 20.23 LBS
9177.2 g / 90.0 N
 medium risk
2 mm 2363 Gs
236.3 mT
 7.97 kg / 17.57 LBS
7971.8 g / 78.2 N
 medium risk
3 mm 2176 Gs
217.6 mT
 6.76 kg / 14.91 LBS
6761.0 g / 66.3 N
 medium risk
5 mm 1793 Gs
179.3 mT
 4.59 kg / 10.13 LBS
4592.7 g / 45.1 N
 medium risk
10 mm 1013 Gs
101.3 mT
 1.46 kg / 3.23 LBS
1464.5 g / 14.4 N
 low risk
15 mm 565 Gs
56.5 mT
 0.46 kg / 1.00 LBS
455.3 g / 4.5 N
 low risk
20 mm 330 Gs
33.0 mT
 0.16 kg / 0.34 LBS
155.7 g / 1.5 N
 low risk
30 mm 134 Gs
13.4 mT
 0.03 kg / 0.06 LBS
25.6 g / 0.3 N
 low risk
50 mm 36 Gs
3.6 mT
 0.00 kg / 0.00 LBS
1.9 g / 0.0 N
 low risk
Grip strength decreases sharply per each millimeter of distance. Note that even a very thin break (e.g., dirt, paint, veneer) noticeably reduces the pull force. Magnetic products work most effectively at the point of direct contact; distance nullifies the power. Observe how rapidly the pull force drop, when the magnet does not touch flatly to the steel surface. When calculating the assembly, avoid additional spacers.

Table 2: Sliding load (vertical surface)
MW 25x6 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 2.05 kg / 4.53 LBS
2054.0 g / 20.1 N
1 mm Stal (~0.2) 1.84 kg / 4.05 LBS
1836.0 g / 18.0 N
2 mm Stal (~0.2) 1.59 kg / 3.51 LBS
1594.0 g / 15.6 N
3 mm Stal (~0.2) 1.35 kg / 2.98 LBS
1352.0 g / 13.3 N
5 mm Stal (~0.2) 0.92 kg / 2.02 LBS
918.0 g / 9.0 N
10 mm Stal (~0.2) 0.29 kg / 0.64 LBS
292.0 g / 2.9 N
15 mm Stal (~0.2) 0.09 kg / 0.20 LBS
92.0 g / 0.9 N
20 mm Stal (~0.2) 0.03 kg / 0.07 LBS
32.0 g / 0.3 N
30 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
The table below shows the estimated force needed to initiate the sliding of the magnet vertically on a vertical steel wall (assuming typical friction coefficient). The holding force varies with the separation distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MW 25x6 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
3.08 kg / 6.79 LBS
3081.0 g / 30.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.05 kg / 4.53 LBS
2054.0 g / 20.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.03 kg / 2.26 LBS
1027.0 g / 10.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
5.14 kg / 11.32 LBS
5135.0 g / 50.4 N
When hanging a holder on a upright wall (e.g., a fridge), it you can count on only approx. 20%-30% of nominal attraction strength. Gravitational force and a low friction coefficient influence the fact that holders move down faster than they pop off the substrate. Planning a hanger? Note that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the holder will slip down under a much lighter weight. Utilizing a rubberized layer can effectively increase the grip.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 25x6 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 0.51 kg / 1.13 LBS
513.5 g / 5.0 N
1 mm
13%
 1.28 kg / 2.83 LBS
1283.8 g / 12.6 N
2 mm
25%
 2.57 kg / 5.66 LBS
2567.5 g / 25.2 N
3 mm
38%
 3.85 kg / 8.49 LBS
3851.3 g / 37.8 N
5 mm
63%
 6.42 kg / 14.15 LBS
6418.7 g / 63.0 N
10 mm
100%
 10.27 kg / 22.64 LBS
10270.0 g / 100.7 N
11 mm
100%
 10.27 kg / 22.64 LBS
10270.0 g / 100.7 N
12 mm
100%
 10.27 kg / 22.64 LBS
10270.0 g / 100.7 N
A thin metal plate is not enough to conduct the entire magnetic field, which squanders power of the holder. Should you attach a powerful product to a thin surface, the magnetism will pass right through and the pull force will drop sharply. To utilize the maximum of this neodymium's power, you require a sufficiently solid backing of steel. The saturation effect means that on sheet metal structures (e.g., thin profiles), the magnet holds weaker. We recommend selecting the steel dimension based on the following data.

Table 5: Thermal stability (stability) - thermal limit
MW 25x6 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 10.27 kg / 22.64 LBS
10270.0 g / 100.7 N
 OK
40 °C -2.2% 10.04 kg / 22.14 LBS
10044.1 g / 98.5 N
 OK
60 °C -4.4% 9.82 kg / 21.65 LBS
9818.1 g / 96.3 N
80 °C -6.6% 9.59 kg / 21.15 LBS
9592.2 g / 94.1 N
100 °C -28.8% 7.31 kg / 16.12 LBS
7312.2 g / 71.7 N
Classic neodymiums irreversibly lose power after exceeding the maximum temperature. Protect against heat – high temperature can permanently demagnetize this magnet. With every degree above norm, the magnet's force temporarily lowers. Refrain from using this product near heat sources higher than its safe range. Too high temperature will lead to irreversible degradation of magnetism.
*Engineering note: Thermal stability is determined by both grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) may lose charge permanently under lower heat stress than taller cylinders. Red status in the table signals a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field range
MW 25x6 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 21.76 kg / 47.98 LBS
4 291 Gs
3.26 kg / 7.20 LBS
3264 g / 32.0 N
 N/A
1 mm 20.66 kg / 45.54 LBS
5 225 Gs
3.10 kg / 6.83 LBS
3098 g / 30.4 N
 18.59 kg / 40.98 LBS
~0 Gs
2 mm 19.45 kg / 42.87 LBS
5 070 Gs
2.92 kg / 6.43 LBS
2917 g / 28.6 N
 17.50 kg / 38.58 LBS
~0 Gs
3 mm 18.18 kg / 40.09 LBS
4 902 Gs
2.73 kg / 6.01 LBS
2727 g / 26.8 N
 16.36 kg / 36.08 LBS
~0 Gs
5 mm 15.60 kg / 34.39 LBS
4 541 Gs
2.34 kg / 5.16 LBS
2340 g / 23.0 N
 14.04 kg / 30.95 LBS
~0 Gs
10 mm 9.73 kg / 21.46 LBS
3 587 Gs
1.46 kg / 3.22 LBS
1460 g / 14.3 N
 8.76 kg / 19.31 LBS
~0 Gs
20 mm 3.10 kg / 6.84 LBS
2 025 Gs
0.47 kg / 1.03 LBS
465 g / 4.6 N
 2.79 kg / 6.16 LBS
~0 Gs
50 mm 0.13 kg / 0.28 LBS
409 Gs
0.02 kg / 0.04 LBS
19 g / 0.2 N
 0.11 kg / 0.25 LBS
~0 Gs
60 mm 0.05 kg / 0.12 LBS
268 Gs
0.01 kg / 0.02 LBS
8 g / 0.1 N
 0.05 kg / 0.11 LBS
~0 Gs
70 mm 0.03 kg / 0.06 LBS
183 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
 0.02 kg / 0.05 LBS
~0 Gs
80 mm 0.01 kg / 0.03 LBS
131 Gs
0.00 kg / 0.00 LBS
2 g / 0.0 N
 0.01 kg / 0.03 LBS
~0 Gs
90 mm 0.01 kg / 0.02 LBS
96 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.01 LBS
72 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two strong neodymiums interact from a significantly greater distance than a neodymium and metal setup. Such a system of two magnets creates a more powerful interaction and a larger range of performance. Designing a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when attracting two neodymiums, the pinch force is massive. The levitation is slightly lower than the connection force, but still large.
*Flux density for N-N configuration reaches ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Attention: Results refer to friction force of two identical magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - precautionary measures
MW 25x6 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 10.5 cm
Hearing aid 10 Gs (1.0 mT) 8.0 cm
Timepiece 20 Gs (2.0 mT) 6.5 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
A strong magnetic field is a large risk to electronics and pacemakers. These neodymiums generate a flux that disrupts operation of digital equipment. Notice: the invisible magnetic field passes through tissues and glass. Increased vigilance must be taken by people with cochlear implants and insulin pumps. The risk also applies to: mechanical watches, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MW 25x6 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.60 km/h
(6.56 m/s)
 0.47 J
30 mm 37.72 km/h
(10.48 m/s)
 1.21 J
50 mm 48.63 km/h
(13.51 m/s)
 2.02 J
100 mm 68.77 km/h
(19.10 m/s)
 4.03 J
Magnetic elements are very brittle – a violent impact against metal can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Impact energy can destroy the magnet or dangerous crushing to fingers. Be sure to control the product during installation so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 25x6 / 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 25x6 / N38

Parameter Value SI Unit / Description
Magnetic Flux 14 740 Mx 147.4 µWb
Pc Coefficient 0.34 Low (Flat)
Flux value emitted by the pole surface. Key data when building generators as well as sensors. Pc value determines the magnet's operating point.

Table 11: Physics of underwater searching
MW 25x6 / N38

Environment Effective steel pull Effect
Air (land) 10.27 kg Standard
Water (riverbed) 11.76 kg
(+1.49 kg buoyancy gain)
+14.5%
Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.
1. Shear force

*Note: On a vertical wall, the magnet retains merely a fraction of its max power.

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) drastically weakens the holding force.

3. Heat tolerance

*For N38 grade, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.34

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.

Technical and environmental data
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%
Ecology and recycling (GPSR)
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: 010050-2026
Measurement Calculator
Magnet pull force
Magnetic Induction
Type a number in one of the inputs, to see all other values change instantly.

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This product is an exceptionally strong cylinder magnet, composed of durable NdFeB material, which, with dimensions of Ø25x6 mm, guarantees the highest energy density. The MW 25x6 / N38 model boasts high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 10.27 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 100.71 N with a weight of only 22.09 g, this rod is indispensable in electronics and wherever every gram matters.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 25.1 mm) using epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets NdFeB grade N38 are suitable for 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø25x6), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
This model is characterized by dimensions Ø25x6 mm, which, at a weight of 22.09 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 10.27 kg (force ~100.71 N), which, with such defined dimensions, proves the high grade of the NdFeB material. 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 25 mm. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Apart from their consistent holding force, neodymium magnets have these key benefits:
  • They have constant strength, and over more than ten years their attraction force decreases symbolically – ~1% (in testing),
  • They are extremely resistant to demagnetization induced by external field influence,
  • Thanks to the shimmering finish, the coating of Ni-Cu-Ni, gold-plated, or silver-plated gives an clean appearance,
  • Neodymium magnets ensure maximum magnetic induction on a small area, which ensures high operational effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of precise creating as well as adjusting to individual applications,
  • Universal use in modern technologies – they are commonly used in HDD drives, drive modules, advanced medical instruments, as well as industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in miniature devices

Limitations

Disadvantages of NdFeB magnets:
  • At strong impacts they can crack, 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 power. Often, when the temperature exceeds 80°C, their strength 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
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • We recommend a housing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complex forms.
  • Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these devices can be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

Breakaway force was determined for ideal contact conditions, assuming:
  • with the use of a sheet made of special test steel, ensuring maximum field concentration
  • with a cross-section of at least 10 mm
  • with an ideally smooth contact surface
  • under conditions of no distance (surface-to-surface)
  • during pulling in a direction vertical to the plane
  • at standard ambient temperature

Practical lifting capacity: influencing factors

In real-world applications, the actual lifting capacity depends on a number of factors, ranked from crucial:
  • Gap (between the magnet and the plate), since even a tiny distance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually several times smaller (approx. 1/5 of the lifting capacity).
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
  • Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
  • Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
  • Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity was measured with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.

Precautions when working with NdFeB magnets
Risk of cracking

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Product not for children

NdFeB magnets are not intended for children. Swallowing a few magnets can lead to them attracting across intestines, which poses a critical condition and necessitates urgent medical intervention.

Immense force

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

Physical harm

Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

Machining danger

Mechanical processing of NdFeB material poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Electronic devices

Very strong magnetic fields can destroy records on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.

Power loss in heat

Do not overheat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, look for HT versions (H, SH, UH).

GPS Danger

GPS units and mobile phones are highly susceptible to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Medical implants

For implant holders: Powerful magnets affect medical devices. Maintain at least 30 cm distance or ask another person to handle the magnets.

Skin irritation risks

It is widely known that nickel (standard magnet coating) is a common allergen. For allergy sufferers, avoid touching magnets with bare hands and select encased magnets.

Safety First! More info about risks in the article: Magnet Safety Guide.