3M™ Disc Pad Holders allow you to quickly and easily change Scotch-Brite™ Abrasive 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 centre 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. 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.