3M disc pad holder 917 7in x 5/16in x 3/8in – 5/8-11 int 3M disc pad holders allow you to quickly and easily change scotch-briteabrasive discs during multi-step projects. Available in a range of sizes, foam densities and attachment options, so you can find the perfect holders for your grinding and sanding projects. 3M disc pad holders have a center hole with internal threadschoose the thread size that matches the external thread size of your right angle grinder. T-shaped hooks securely hold a surface conditioning disc and provide quick and easy disc attachment, removal, and re-attachment. The hook-and-loop feature enables the disc to be used and re-used for the extent of the abrasive life. Discs are sold separately. Our scotch-brite surface conditioning discs and light grinding/blending products sold separately deburr, clean, blend, and finish a wide variety of materials. Using surface conditioning products with a 3M disc pad holder generates finishes suitable for paint. Applications are power tools, accessories, compounds, specialties. Industries include builders hardware, medical instruments, metal fabrication, metal implants, plating & polishing, plumbing fixtures, turbine engines.