General description Made of neodymium magnet and rubber-coated steel backing plate, these magnets have a magnetic attraction force that is amplified 2 times compared to bare magnets. The rubber coating protects delicate ferrous surfaces from scratches or damage, such as painted or polished surfaces, while also increasing friction and improving the stability of the adhesive force. They can be attached to the ferrous surfaces of vehicles, doors, metal shelves, and various machines, creating a permanent or temporary attachment point without the need for drilling holes. Technical specifications Component model: rubber-coated neodymium magnet Material: N45 neodymium magnet + A3 steel + black rubber Dimensions: Diameter 1.25'' (32mm) * Height 6mm (0.29'') Male Thread Stud: M6 * 0.39'' (Thread Length 10mm) Vertical Pulling Force: 12kg Horizontal Pulling Force: 4kg based on 0.33'' thick steel plate Operating Temperature: 80℃ Package Contents: 4 x Pot Magnets + 4 x M6 Male Threads + 4 x Flat