This Fein BF 10-280 E Compact Belt File (72280550090) is a professional quality tool designed for maximum material removal and constant speed under heavy load. The variable speed control makes it ideal for all applications and materials. The grinding arm rotates 180 degrees with the push of a button and can be changed out easily with optional arms. Belts from 3/32 up to 3/4" widths in a variety of grits and styles ensure that this tool is the first one to grab for any job.