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MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

lamellar magnet

Catalog no 020154

GTIN/EAN: 5906301811602

5.00

length

40 mm [±0,1 mm]

Width

15 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

22.5 g

Magnetization Direction

↑ axial

Load capacity

11.35 kg / 111.37 N

Magnetic Induction

249.11 mT / 2491 Gs

Coating

[NiCuNi] Nickel

view properties »

15.07 ZŁ with VAT / pcs + price for transport

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Force along with shape of a neodymium magnet can be analyzed on our power calculator.

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Physical properties - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Specification / characteristics - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

properties
properties values
Cat. no. 020154
GTIN/EAN 5906301811602
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 40 mm [±0,1 mm]
Width 15 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 22.5 g
Magnetization Direction ↑ axial
Load capacity ~ ? 11.35 kg / 111.37 N
Magnetic Induction ~ ? 249.11 mT / 2491 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x15x5x2[7/3.5] / N38 - lamellar 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 simulation of the assembly - technical parameters

The following data constitute the direct effect of a physical calculation. Values are based on algorithms for the material Nd2Fe14B. Operational performance may deviate from the simulation results. Treat these data as a reference point during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
MPL 40x15x5x2[7/3.5] / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2490 Gs
249.0 mT
 11.35 kg / 25.02 LBS
11350.0 g / 111.3 N
 dangerous!
1 mm 2306 Gs
230.6 mT
 9.73 kg / 21.45 LBS
9731.3 g / 95.5 N
 medium risk
2 mm 2095 Gs
209.5 mT
 8.03 kg / 17.70 LBS
8028.8 g / 78.8 N
 medium risk
3 mm 1877 Gs
187.7 mT
 6.45 kg / 14.21 LBS
6445.4 g / 63.2 N
 medium risk
5 mm 1472 Gs
147.2 mT
 3.97 kg / 8.74 LBS
3965.1 g / 38.9 N
 medium risk
10 mm 792 Gs
79.2 mT
 1.15 kg / 2.53 LBS
1147.1 g / 11.3 N
 safe
15 mm 454 Gs
45.4 mT
 0.38 kg / 0.83 LBS
376.9 g / 3.7 N
 safe
20 mm 278 Gs
27.8 mT
 0.14 kg / 0.31 LBS
141.4 g / 1.4 N
 safe
30 mm 122 Gs
12.2 mT
 0.03 kg / 0.06 LBS
27.0 g / 0.3 N
 safe
50 mm 35 Gs
3.5 mT
 0.00 kg / 0.01 LBS
2.3 g / 0.0 N
 safe
Pulling power drops significantly with every mm of spacing. Note that even the smallest gap (e.g., contamination, varnish, veneer) strongly reduces the pull force. Magnetic products hold strongest at the point of direct contact; gap drastically cuts the force. See how flashily the parameters plummet, when the magnet does not touch directly to the metal substrate. When designing the arrangement, discard redundant distances.

Table 2: Slippage force (wall)
MPL 40x15x5x2[7/3.5] / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 2.27 kg / 5.00 LBS
2270.0 g / 22.3 N
1 mm Stal (~0.2) 1.95 kg / 4.29 LBS
1946.0 g / 19.1 N
2 mm Stal (~0.2) 1.61 kg / 3.54 LBS
1606.0 g / 15.8 N
3 mm Stal (~0.2) 1.29 kg / 2.84 LBS
1290.0 g / 12.7 N
5 mm Stal (~0.2) 0.79 kg / 1.75 LBS
794.0 g / 7.8 N
10 mm Stal (~0.2) 0.23 kg / 0.51 LBS
230.0 g / 2.3 N
15 mm Stal (~0.2) 0.08 kg / 0.17 LBS
76.0 g / 0.7 N
20 mm Stal (~0.2) 0.03 kg / 0.06 LBS
28.0 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
This section indicates the estimated weight limit necessary to cause the sliding of the magnet downwards on a vertical steel plate (assuming typical friction). This value varies with the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MPL 40x15x5x2[7/3.5] / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
3.41 kg / 7.51 LBS
3405.0 g / 33.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.27 kg / 5.00 LBS
2270.0 g / 22.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.14 kg / 2.50 LBS
1135.0 g / 11.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
5.68 kg / 12.51 LBS
5675.0 g / 55.7 N
When hanging a magnet on a upright surface (e.g., a fridge), it will only hold only about 1/5 of nominal attraction strength. Gravitational force as well as a low friction coefficient cause that magnets slip faster than they pull off. Planning a wall mount? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a smooth steel, the magnet will slide down under a noticeably lighter weight. Utilizing a rubberized coating can drastically improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MPL 40x15x5x2[7/3.5] / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 0.57 kg / 1.25 LBS
567.5 g / 5.6 N
1 mm
13%
 1.42 kg / 3.13 LBS
1418.8 g / 13.9 N
2 mm
25%
 2.84 kg / 6.26 LBS
2837.5 g / 27.8 N
3 mm
38%
 4.26 kg / 9.38 LBS
4256.3 g / 41.8 N
5 mm
63%
 7.09 kg / 15.64 LBS
7093.8 g / 69.6 N
10 mm
100%
 11.35 kg / 25.02 LBS
11350.0 g / 111.3 N
11 mm
100%
 11.35 kg / 25.02 LBS
11350.0 g / 111.3 N
12 mm
100%
 11.35 kg / 25.02 LBS
11350.0 g / 111.3 N
A thin sheet is unable to absorb the entire magnetic field, which squanders power of the holder. Should you mount a strong magnet to a thin surface, the field will pass right through and the attraction force will be weaker. To utilize the maximum of this magnet's power, you need a suitably thick piece of metal. The saturation phenomenon means that on delicate walls (e.g., thin profiles), the product shows lower pull force. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal resistance (stability) - power drop
MPL 40x15x5x2[7/3.5] / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 11.35 kg / 25.02 LBS
11350.0 g / 111.3 N
 OK
40 °C -2.2% 11.10 kg / 24.47 LBS
11100.3 g / 108.9 N
 OK
60 °C -4.4% 10.85 kg / 23.92 LBS
10850.6 g / 106.4 N
80 °C -6.6% 10.60 kg / 23.37 LBS
10600.9 g / 104.0 N
100 °C -28.8% 8.08 kg / 17.82 LBS
8081.2 g / 79.3 N
Ordinary NdFeB products lose parameters above the temperature limit. Watch out for overheating – heat can irreversibly destroy this product. As the temperature rises, the magnet's force briefly decreases. Refrain from using this product near heat sources exceeding its safe range. Ignoring the limit will lead to destruction of magnetism.
*Important note: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures than taller cylinders. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 40x15x5x2[7/3.5] / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 22.94 kg / 50.58 LBS
3 961 Gs
3.44 kg / 7.59 LBS
3441 g / 33.8 N
 N/A
1 mm 21.37 kg / 47.11 LBS
4 807 Gs
3.21 kg / 7.07 LBS
3205 g / 31.4 N
 19.23 kg / 42.40 LBS
~0 Gs
2 mm 19.67 kg / 43.37 LBS
4 612 Gs
2.95 kg / 6.50 LBS
2951 g / 28.9 N
 17.70 kg / 39.03 LBS
~0 Gs
3 mm 17.94 kg / 39.55 LBS
4 404 Gs
2.69 kg / 5.93 LBS
2691 g / 26.4 N
 16.15 kg / 35.59 LBS
~0 Gs
5 mm 14.58 kg / 32.15 LBS
3 971 Gs
2.19 kg / 4.82 LBS
2187 g / 21.5 N
 13.12 kg / 28.93 LBS
~0 Gs
10 mm 8.01 kg / 17.67 LBS
2 944 Gs
1.20 kg / 2.65 LBS
1202 g / 11.8 N
 7.21 kg / 15.90 LBS
~0 Gs
20 mm 2.32 kg / 5.11 LBS
1 583 Gs
0.35 kg / 0.77 LBS
348 g / 3.4 N
 2.09 kg / 4.60 LBS
~0 Gs
50 mm 0.12 kg / 0.26 LBS
359 Gs
0.02 kg / 0.04 LBS
18 g / 0.2 N
 0.11 kg / 0.24 LBS
~0 Gs
60 mm 0.05 kg / 0.12 LBS
243 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
171 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
124 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
92 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
70 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnetic products interact from a much further distance than a magnet and sheet setup. The setup of two magnets produces a massive flux and a further horizon of operation. Designing a powerful holder? Apply two magnets instead of one magnet and a steel. Remember that when connecting a pair of magnets, the impact force is extreme. The levitation is slightly lower than the attraction, but still impressive.
*Flux density for N-N configuration drops to ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
* Estimates refer to friction force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MPL 40x15x5x2[7/3.5] / 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
Mobile device 40 Gs (4.0 mT) 5.0 cm
Car key 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
Extremely neodym field poses a real danger to IT equipment as well as medical implants. These NdFeB products generate a field that disrupts operation of sensitive medical devices. Be aware: the unseen radiation passes through tissues and housings. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, remotes, speakers, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MPL 40x15x5x2[7/3.5] / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.04 km/h
(6.68 m/s)
 0.50 J
30 mm 39.29 km/h
(10.91 m/s)
 1.34 J
50 mm 50.66 km/h
(14.07 m/s)
 2.23 J
100 mm 71.63 km/h
(19.90 m/s)
 4.45 J
Magnetic elements are prone to chipping – a strong collision with metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Impact energy can trigger coating fragments or injury to skin. Always hold the magnet during bringing near metal so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the magnet. Use safety goggles when working with large magnets.

Table 9: Corrosion resistance
MPL 40x15x5x2[7/3.5] / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Pc)
MPL 40x15x5x2[7/3.5] / N38

Parameter Value SI Unit / Description
Magnetic Flux 14 969 Mx 149.7 µWb
Pc Coefficient 0.26 Low (Flat)
Total magnetic flux passing through the magnet pole. Essential parameter in coil applications as well as sensors. The Pc coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 40x15x5x2[7/3.5] / N38

Environment Effective steel pull Effect
Air (land) 11.35 kg Standard
Water (riverbed) 13.00 kg
(+1.65 kg buoyancy gain)
+14.5%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.
1. Shear force

*Warning: On a vertical wall, the magnet retains just approx. 20-30% of its max power.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) severely reduces 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) = 0.26

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.

Technical specification and ecology
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%
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: 020154-2026
Quick Unit Converter
Magnet pull force
Field Strength
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This product is a very powerful magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x15x5 mm and a weight of 22.5 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 11.35 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 11.35 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 40x15x5x2[7/3.5] / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 11.35 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
Standardly, the MPL 40x15x5x2[7/3.5] / N38 model is magnetized through the thickness (dimension 5 mm), which means that the N and S poles are located on its largest, flat surfaces. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. This is the most popular configuration for block magnets used in separators and holders.
This model is characterized by dimensions 40x15x5 mm, which, at a weight of 22.5 g, makes it an element with impressive energy density. The key parameter here is the lifting capacity amounting to approximately 11.35 kg (force ~111.37 N), which, with such a compact shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of rare earth magnets.

Strengths

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They do not lose strength, even over around ten years – the reduction in lifting capacity is only ~1% (theoretically),
  • Neodymium magnets are characterized by remarkably resistant to magnetic field loss caused by external field sources,
  • In other words, due to the reflective finish of nickel, the element becomes visually attractive,
  • The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of custom machining and adjusting to complex conditions,
  • Versatile presence in modern industrial fields – they are utilized in computer drives, motor assemblies, precision medical tools, also other advanced devices.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Characteristics of disadvantages of neodymium magnets and proposals for their use:
  • At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of producing threads in the magnet and complex shapes - preferred is casing - mounting mechanism.
  • Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these magnets are able to disrupt the diagnostic process medical after entering the body.
  • Due to complex production process, their price is relatively high,

Pull force analysis

Magnetic strength at its maximum – what contributes to it?

The lifting capacity listed is a theoretical maximum value conducted under specific, ideal conditions:
  • with the application of a sheet made of low-carbon steel, ensuring maximum field concentration
  • whose thickness reaches at least 10 mm
  • with an ground contact surface
  • under conditions of gap-free contact (metal-to-metal)
  • under axial force vector (90-degree angle)
  • at conditions approx. 20°C

Practical lifting capacity: influencing factors

It is worth knowing that the working load will differ influenced by the following factors, starting with the most relevant:
  • Gap (betwixt the magnet and the metal), as even a tiny distance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, rust or debris).
  • Angle of force application – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Metal type – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
  • Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under shearing force the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Safety rules for work with NdFeB magnets
Do not drill into magnets

Dust created during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Shattering risk

Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. Wear goggles.

Electronic devices

Data protection: Neodymium magnets can damage data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Danger to pacemakers

Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Thermal limits

Standard neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. This process is irreversible.

Hand protection

Risk of injury: The pulling power is so immense that it can result in blood blisters, crushing, and broken bones. Use thick gloves.

Do not give to children

Strictly store magnets away from children. Ingestion danger is significant, and the effects of magnets connecting inside the body are life-threatening.

Handling rules

Use magnets with awareness. Their immense force can shock even professionals. Be vigilant and respect their power.

GPS and phone interference

Navigation devices and smartphones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.

Warning for allergy sufferers

Nickel alert: The nickel-copper-nickel coating consists of nickel. If redness appears, immediately stop working with magnets and use protective gear.

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