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 center hole with internal threads—choose 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.