... changeover from unified to metric threads or vice versa.Threaded Insert TypesThread repair inserts come in many varieties, depending on ... the application.Helical Insert, Free Running, 304 Stainless Steel, Internal Thread Size 10 ... to meet every customer's needs CL-Helicoil Hand Toolshelicoil insert tools,helicoil hand taps,helicoil ring/plug gauge,helicoil ...