Compact yet Powerful: Rubber coated magnet with M6 threaded rod, the round magnet base is 2.59 inches in diameter and 0.39 inch thickness, which has a vertical magnetic attraction over 60 LBS Multi-functional: Rubber coated magnet idea for mini camera, led light bar, display panel, magnetic license plate holder and machines; working on any flat steel surface, like cars, trucks, 4WD, SUV, ATV, UTV, boats, etc. Anti-Scratch Surface: Magnet base made of neodymium magnet coated with soft rubber, anti-slip and anti-scratch, protects the surface of the fixed object from damage No-Hassle Setup: Rubber coated magnet are ready to be installed with a simple snap or stick. Just attach to the flat metal surface, requiring no special tools Durable Material: Rubber coated magnets with rubber surface, resistance to wear and tear, making them work in the outdoor humid environment for a long time, durable and pratical Safety Warning Flag Mount for Trucks Features with Sturdy Locking Wing Nuts Chromed Steel Construction High Quality Rubber Pad Anti-scratch, Non-slip, Waterproof Design No Drilling Required, Convenient Use Rubber Coated Magnets Specifications Material: Magnetic + Rubber Pad Size: 2.59 In Diameter; 0.39" in thickness Thread Size: M6 Color: Black Pull Off Force: Over 60 LBS Package includes: 4 x Round Strong Magnet; 4 x Wing Nuts