3M 27379 Cross Pad, 2 in W, 2 in L, 120 Grit, Fine, Aluminum Oxide Abrasive, Cloth Backing

3M Cross Pad 341D is used for close tolerance polishing of small radii and channels, deburring the ends and insides of tubing and other special applications. When inserted into a hole or channel, the flexible cross shape conforms to the diameter of the workpiece, making this a versatile accessory for your inside diameter finishing jobs. The X-weight cloth backing of our 3M Cross Pad 341D supports both grinding and polishing applications. It has a closed coat of aluminum oxide abrasive secured with a heat-resistant resin bond. This cross pad works well where close-tolerance polishing or deburring is needed. A cross pad attaches to a threaded mandrel (sold separately) that attaches to a rotary tool such as a die grinder or drill. Together, the mandrel and cross pad enable the user to grind or finish the inner contours of various-sized channels. Max RPM depends on the size of the pad. 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.