IWISS Combo Angle Head Pex Pipe Plumbing Crimping Tool IWISS for Copper Crimp Jaw Sets 1/2" & 3/4" with Go/No-Go Crimp Gauge Crimp meets ASTM F1807 Standard Specification. Combined 1/2" & 3/4" in One PEX crimp tool and easily calibrated. Perfect POLISHED JAW and Light weight frame and comfort grips make crimping easier. Easy to crimp small corner and save 30% labor with less fatigue without sacrificing tool strength. suit Sharkbite, Watts, Apollo and All US F1807 Standards.