Universal Tool Air Files for use with Universal Tool Air Files. Including Flat Mill Cut Air Files, Round Single Cut Air Files, Triangle Single Cut Air Files, Flat Bastard Cut Air Files, and Assorted Air Files.Universal Tool Air Files feature a 1/4” stroke for fast material removal, a rear exhaust that keeps air away from cuttings, and also feature a compact design for increased access and comfort.Universal Tool Recoilless Air Files feature patented ergonomically advanced low vibration and low frequency design that reduces fatigue. Universal Tool Recoilless Air Files also feature a handle that rotates 360 for ultimate access and comfort and a 1/4” stroke with 9000RPM that provides smooth and fast material removal. Universal Tool Recoilless Air Files are best suited for repetitive filing as well as metal preparation.