<p>3M? Cartridge Roll 341D gives you 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.</p><p>3M? Cartridge Roll 341D has a closed coat of aluminum oxide abrasive secured with a heat-resistant resin bond. Cartridge rolls fit onto a cartridge roll mandrel (sold separately) and are ideal for accessing small, hard to reach spaces. 3M? Cartridge Roll 341D is used in metalworking applications.<br><br>Aluminum oxide is a popular choice among industrial professionals because of its fast cut-rate and long life. This mineral makes a tough, durable abrasive that self-fractures to expose fresh cutting edges, whereas traditional natural abrasives dull more quickly. Due to its fast cut-rate, hardness, and strength, it is widely used in grinding applications in addition to sanding and finishing applications. Aluminum oxide is suitable for a wide variety of materials in both woodworking and metalworking, including ferrous alloys.<br><br>Heat-resistant resin is a sturdy binding agent that adheres the abrasive to the backing and maintains the stability of the bond even in conditions of high heat or pressure.<br><br>Cartridge rolls fit 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. To ensure correct fit, the center hole diameter of the cartridge roll must be equal to the diameter of the mandrel pilot inserted into the cartridge roll.</p><strong>3M 51144140329 Features:</strong><ul><li>Small size is ideal for sanding and finishing hard-to-reach spaces</li><li>Cloth backing supports heavy sanding yet frays to expose fresh abrasive</li><li>Resin bond withstands high heat and pressure</li><li>Aluminum oxide abrasive in a closed-coat layer provides fast cut and long life</li><li>Rolls attach to a compatible cartridge roll mandrel (sold separately)</li></ul><strong>3M 51144140329 Specifications:</strong><ul><li>Abrasive Material: Aluminum Oxide</li><li>Backing Material: Cloth</li><li>Backing Weight: X Weight</li><li>Color: Brown</li><li>Grade: Non Pertinent</li><li>Maximum RPM: 24000</li><li>Package Quantity: 100 RLS</li></ul>