IWISS Combo Angle Head PEX Pipe Crimping Tool Kits Used for 1/2" & 3/4" Pex Crimp with Go/No-Go Gauge with PEX Pipe Cutters suits All US F1807 Standards (IWS-C 1/2"+3/4" PEX Crimping Tool KIt) Tool is factory calibrated. Angled-heads for access to tight spaces with ease. Go/No-Go Gauge and PEX PIPE CUTTER and Instruction included. Polished crimp jaw ensures no damage both on PEX Pipe and Copper Crimp Rings. Lightweight composite handles reduce fatigue Works with 1/2-inch and 3/4-inch PEX copper crimp rings and meets ASTM F1807 standard.