Helicoil HSS insert Tap UNF 1 2 Finishing CLP100B Crush and Cut Resistant Safer CA495 Crush and Cut Resistant Safer Heavy Duty Cable but still Flexible IP66 Water Proof Plug & Socket 2 Compatible with AWS* for wireless connectivity with compatible dust extraction HELE TUNF16 Helicoil HSS Insert Tap UNF 1 2 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