Neodymium Magnet with Rubber Coating: These rubber-coated magnetic cups are made of 6 super-strong neodymium magnets and a steel backing plate encased in rubber. They feature a special multi-pole magnetic arrangement, significantly enhancing the adhesive force. The rubber coating protects delicate ferrous surfaces from scratches.<br> Secure Mounting: Attach to ferrous surfaces on vehicles, metal shelves, and various types of machinery. The magnetic cup creates a permanent or temporary fixing point, avoiding the need for drilling.<br> Note:<br> 1) The 42kg magnetic pull force was tested using a computer-controlled tensile testing machine. This is the vertical pull force required to detach the fishing magnet from a 10mm thick steel plate under ideal conditions. The actual pull force varies depending on:<br> a: Steel thickness (thinner steel reduces pull force). The 42kg vertical magnetic pull force was obtained using a 10mm thick steel plate.<br> b: Pull direction (the greater the deviation from 90 degrees, the lower the pull force; horizontal pull force is typically about one-third of the vertical pull force).<br> c: Pull position (further from the center of gravity reduces pull force).<br> Iron filings on the magnet surface also reduce pull force.<br> 2) The magnet only attracts iron, ferrous metals, and nickel; it does not attract gold, silver, copper, aluminum, their alloys, or stainless steel.<br> 3) Magnetic force is concentrated at the bottom of the magnet; there is minimal magnetic force on other surfaces.<br> Color: Black<br> 1. Part Name: D88mm Rubber Coated Magnet with M8 External Thread<br> 2. Material: Neodymium Magnet + Steel + Rubber<br> 3. Size: D88mm (Diameter) * 8mm (Magnetic Base Thickness)<br> 4. External Thread: M8, 25mm length, 15mm length available<br> 5. Vertical Pull Force: 42kg; Horizontal Pull Force: 8.4kg (based on 10mm steel plate)<br> 6. Max. Operating Temperature: 80 degrees Celsius<br> Product Features:<br> 1. Strong pull force thanks to high-quality N45 neodymium magnet and steel plate.<br> 2. Rubber coating prevents scratches on paint or other sensitive ferrous surfaces.<br> Numerous Applications: Work and signal lights, cameras, fixtures, and more.<br> Warnings:<br> 1. This magnet is very powerful for its size and can pinch severely.<br> 2. Keep away from children of all ages.<br> 3. Do not allow magnets to collide with each other or a metal surface; exercise extreme caution when handling.<br> Package Contents:<br> 2 x Magnetic Base Mount (Lights not included)<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.