Composed of a neodymium magnet and a backing steel plate covered with a rubber, the magnetic pull strength of neodymium magnet has been amplified 2 times than that of its bare magnets. The rubber coating can protect the sensitive ferrous surface from being scratched or damaged as painted, polished or any other sensitive surface, it can also Increase friction and improve the stability of pulling force.< /p> Attached to the ferrous surface of vehicle, door, metal shelves and kinds of machinery which have sensitive ferrous surface, the magnetic base can create a permanent or temporary fixing point avoiding a drill hole and damaging the painted surface. Specification 1. Part model: Neodymium coated rubber magnet 2. Material: Neodymium magnet N45+ A3steel + Black rubber 3. Size: Diameter 1.25'' (32mm)* Height 6mm (0.29'') 4 Male Thread Stud: M6*0.39''(Thread Length 10mm) 5. Vertical pulling force: 12 kg Horizontal pulling force: 4 kg based on 0.33''thickness steel plate 6. Working Temperature: 80 7. Package Included: 4pcs Pot Magnet + 4pcs M6 Male Thread + 4pcs Flat Washers, Spring Washer