Our 3M™ Cubitron™ II file belts 786F is a 3M™ best in class abrasive belt, designed for use with the 3M™ file belt sander, for tasks like grinding out rivets and removing spot welds. 3M™ precision shaped grain is resin bonded on a heavy-duty backing for a more consistent finish, cooler operation and 2X more belt life. The resin bond and a grinding aid keep this belt cutting cool and sharp.