3M Disc Pad Hub 45190, 4-1/2 in 5/8-11 Internal, 10 per case

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 fiber disc in place.

3M Integrated Solutions 7000045659 | 4.5000 in | Disc Backing Pad