Premium grinder/sander conversion kit converts your angle grinder into a sander. Diablo's backing pads and fiber offer improved performance, extends sanding life and increases productivity. Designed for use in angle grinders and is ideal for metal applications. Kit includes (1) back-up pad, (1) 5/8- 11 locknut and (2) 50 grit (coarse) fiber discs. Fits all 7" grinders with 5/8" - 11 spindles.