100Pcs Angle Grinder Sanding Discs And 4 Inch Hook And Loop Backing, 800 Grits Superior Material: The sanding discs are made of high quality aluminium oxide abrasive, flexible, abrasion-resistant, long service life and excellent surface finish Wide Application: 4 Inch sanding discs sandpaper can used in the grinding and polishing of machinery, metal, wood, rubber and other materials. 10 pcs each of 40 60 80 120 180 240 320 400 600 800 Grits (Total 100pcs) For Angle Grinders: The 4 inch hook and loop backing pad is designed to thread directly onto the angle grinder spindle and no adapters needed. Hook and loop function provides easy closure for removing disc For Electric Drills: 4 inch backing pad (5/8-11 thread) with 8mm drill adapter can easily connect to your variable speed polisher, grinder, household power drill or other rotary tools. To make an angle grinder or drill function as a sander tool What You Will Get: 10 pieces each of 40 60 80 120 180 240 320 400 600 800 grit sanding discs + 1 piece of 4 inch hook and loop sanding pad + 1 piece of drill adapter. You could get almost everything you need to start your general sanding projects