SharkBite PEX Cinch Clamp Tool. It is a quick connection tool that provides immediate pressure testing to well over 100 PSI. The tool design eliminates worries of old-style jaws and calibration issues, ensuring first-time every time connections. It is less expensive than buying 4 separate tools. This versatile tool does 3/8" TV# 608685, 1/2" TV# 608933, 3/4" TV# 608826, and 1" TV# 597556 cinch clamp PEX connections.