Charnwood SD75MIX Hook and Loop Sanding Disc To fit Velcro Backing Pad 75mm, MIX grit, Pack of 10 Key Features 75mm diameter hook and loop sanding discs to fit velcro backing pad Pack of 10, high quality European made hook and loop backed sanding discs, diameter 75mm (3") , 2 of each Mixed grit. (60, 120, 180, 240 & 400) For use with Charnwood BS10 bowl sander and other similar models.