Helicoil HSS insert Tap UNF 3 8 Finishing 81029BL Tool Only with Coil and CCT009F Tool Only with Coil and Carry case TCS6 30 Matson 6mm Twin Core Cable Sheath 30M MATSON 6mm TWIN CORE CABLE SHEATH (30M) HELE TUNF12 Helicoil HSS Insert Tap UNF 3 8 Finishing Insert taps are used only when installing Wire Thread Inserts Made to an ISO standard so can be used with any brand of Wire Thread Inserts HSS Insert Taps should only to be used in conjunction with Thread Inserts Hand or machine tapping for through holes and blind holes where ample chip clearance is available The lead chamfer permits easier starting and requires less tapping torque than bottoming taps