This Pex tool meets the ASTM 2098 standard. Pex Crimping Set works with stainless steel clamps from any manufacturer to make PEX connections from 3/8' to 1' New design makes it be a multi-function tool which can cinch Clamps and remove the clamps from pipe to re-install Its easy to switch cinch. Andthhe ratchet design and self-release mechanism makes the cinch easy.The tool is factory-adjusted with no requirement for calibration tool This is a 5 in 1 tool if can be used to crimp 3/8 , 1/2, 5/8, 3/4 & 1' inch Stainless clamps. No Adjustment on the tool is needed to switch sizes. Package Includes: 1pc - Red handle Cinch Crimp tool, 1pc - Red handle pipe cutter, 20pcs 1/2' and 10 pcs 3/4' Clamps set, 1pc Storage Bag