The Ingersoll Rand air nibbler provides better angle cuts and holds a tight 1/4in. radius with great accuracy, making it an excellent choice for paint and auto-body shops, tinsmiths and sheet metal shops. Cutting Radius 1/4in., Cutting Capacity Sheet Metal gauge 18, Cutting Capacity Steel gauge 18, Cuts Per Minute CPM 3,200, Air Inlet Size in. NPT 1/4, Cutting Capacity Aluminum gauge 18, Max. Cutting FPM 6, Min. Hose Size in. 3/8, Air Consumption CFM 4. "Nibbles" cold rolled steel, plastic, tin, aluminum and other metals Does not distort the edges starts cuts in the center of the material