UNIVERSALThis tool meets ASTM 2098 standard will work with stainless steel clamps from any manufacturer to make PEX connections from 3/8-inch to 1-inch USE RANGE It can also be used to cinch single ear hose clamp,as long as the ears length & width is within the opening range of the jaws DURABLEThe cinch tool is constructed of durable high-quality steel with forging process to ensure integrated mechanical property and long service life,and inside of the jaw is processed with Wire EDM Cutting to ensure the precision EASYRatcheting design and self-release mechanism makes the cinch effortless.The tool is factory-adjusted with no requirement for calibration tool ALL-IN-ONEThis is a All-in-one kit for pex pipe installation, it includes a cinch tool, a Pex cutter,20pcs of 1/2-inch clamps and 10pcs of 3/4-inch clamps