3M 7000046035 Back-up Pad is a black, firm density pad suitable for grinding applications. It is compatible with disc sanders and right angle grinders and utilizes a hook & loop attachment. The pad has a maximum speed of 13000 mps and a thread size of 5/8"-11. It is commonly used in marine, metalworking, and other industries such as builders hardware, medical instruments, metal fabrication, plating & polishing, plumbing fixtures, and turbine engines. The overall thickness of the pad is 0.12 inches (3.04 mm) and it features a hook type of 7.