3M™ Disc Pad Hub has an internal threaded metal insert that threads onto the shaft of a sander and grinder to hold a disc pad face plate and fibre disc in place.
The 3M™ Disc Pad Hub holds the face plate firmly in position to support a fibre disc with a 7/8 in (2.22 cm) centre hole, which is secured to the hub with a compatible retainer nut. The disc pad hub enables operators to select face plates with four different densities—Soft, Medium, Hard, and Extra-Hard—offering the convenience of using a single power tool for multiple grinding applications. Face plates are sold separately.