3M Sanding Disc Roll: 60 Grit, 1/2 in Dia, Aluminum Oxide, 1 1/2 in Lg

This 3M™ Cartridge Roll provides easy access to small, hard-to-reach spaces for sanding and finishing. As the outermost abrasive layer wears down, the cloth backing frays to expose fresh abrasive layers for continued cutting action. The resin bond helps to withstand high heat and pressure. Aluminum oxide is suitable for a wide variety of materials in both woodworking and metalworking, including ferrous alloys. Cartridge roll fits onto a compatible mandrel (sold separately) that attaches to a rotary tool such as a die grinder or drill. Together, the mandrel and cartridge roll enable the user to grind or finish hard-to-reach areas of a workpiece. Due to its fast cut-rate, hardness, and strength, it is widely used in grinding applications in addition to sanding and finishing applications.