One hand tool repairs inch or metric, right or left-handed, coarse, or fine threads. No need for a caliper or pitch gauge to determine diameter or thread count or type. Tool adjusts and quickly adapts to diameter and pitch of fastener thread. Automatically chases good threads and the cutter repairs damaged threads. Blades are made of High-Speed Steel induction hardened to 62 Rockwell for longevity of life. Takes the place of hundreds of taps, assorted thread chasers and thread files. OD Range: 1/2” to 5/8”. Pipe Threads: 1/4” to 3/8”.