The Allstar Performance Twist Lock Backing Pad accepts 2 in. twist lock style cleaning and sanding discs and features a 1/4 in. arbor to work with most drills or 90 degree die grinders. Each high-performance pad is rated up to 30,000 rpm, making them great for cleaning gasket material or paint from parts and surfaces needing to be refurbished. Both are designed to use with the ALL12100 twist lock backing pad (sold separately).