SharkBite Available PEX Pipe Crimp Ring 3/4 Inch, Plumbing Fittings, Pack of 25, 23103CP25, 3/4-Inch CRIMP RINGS: Time and cost savings with the use of SharkBite PEX Crimping Tool 23251 or 23384 FAST: No waiting for glue to dry or joints to cool ASSURANCE: Copper crimp rings and heavy duty PEX Crimping tool do not require calibration and allows each joint to be checked with a go / no-go gauge. USE: Use with SharkBite PEX pipe tubing, PEX Crimp Tool and Barb Fittings RESIDENTIAL and COMMERCIAL: All SharkBite products meet the same standards for commercial and residential plumbing applications