WATTS PEX WPCATK-1"Crimp-All" Crimping Tool Kit with 3/8-Inch to 3/4-Inch Jaw Sets 15-Inch CrimpAll crimping tool used to fasten PEX pipe to brass or poly fittings using copper crimp rings Interchangeable crimping jaws work with 3/8-Inch to 3/4-Inch pipe and fasteners Kit includes 15-Inch crimping tool, 3/8-Inch jaws, 1/2-Inch jaws, 5/8-Inch jaws, 3/4-Inch jaws, Go/No-Go gauge for accuracy, and adjustment tools Tough plastic tool kit helps you keep track of all your crimping tools Tool provides a quick connection that can be instantly wet-tested for accuracy on the job