SharkBite 23100 Plumbing Tool PEX CRIMP RINGS: Time and cost savings in combination with SharkBite PEX Copper Crimp Rings in all the popular sizes  3/8, 1/2, 3/4" and 1. FAST: No waiting for glue to dry or joints to cool ASSURANCE: PEX Crimp tool does not require calibration and allows each joint to be checked with the included go/no-go gauge tool to verify your connection is secure RESIDENTIAL and COMMERCIAL: All SharkBite products meet the same standards for commercial and residential plumbing applications MADE: Proudly made in the USA provides about 5,000 lbs of crimping force.