Bands may be used with a rubber expander wheel attachment

Good for Shaping and Smoothing
This product can also be used for shaping and smoothing wood and fiberglass. The 3M™ Abrasive Cloth Band 341D fits onto a rubber wheel attachment (such as a cushion polishing wheel or a rubber slotted expander wheel, both sold separately) for use with a die grinder or rotary drill. It is constructed with aluminum oxide mineral, a popular choice among industrial professionals because of its fast cut-rate, durability, and long life. It can be used on a wide variety of materials in both woodworking and metalworking, including ferrous alloys, and is the most commonly used industrial abrasive. The abrasive particles are adhered to the cloth backing with resin, creating a strong bond that withstands high heat and pressure. The bands come in a range of widths and lengths to suit different contours and tasks, and are often used in foundry work.