Diablo's grinder/sander conversion kit converts your angle grinder into a sander. Use this kit when switching from a grinding wheel to a fiber disc. All components necessary to begin polishing are included in this kit: back-up pad, locknuts and fiber discs. Diablo's backing pads and fiber discs feature break-through innovations that improve performance, extend sanding life and increase productivity. This conversion kit is designed for use in angle grinders and is ideal for metal applications. 5/8" Arbor Ideal for sanding metal Tool use angle grinder Includes one back-up pad, one 5/8-11 locknut and two 50-grit (coarse) fiber discs