All-in-One PEX Piping Tool Kit: IWS-1234C PEX plumbing kit is designed to make copper crimp ring and copper sleeves connections in sizes 1/2-inch to 3/4-inch. The tool set includes PEX crimping tool(1), PEX cutter(1), 1/2’’ copper crimp ring(20), 3/4’’ copper crimp ring(10). Patented Copper Crimp Ring: Annealed copper crimp rings are used to secure PEX piping to F1807 Brass or PPSU fittings. Designed for longevity and durability. PEX Crimping Tool: Dual cavity plumbing PEX crimping tool for PEX Copper Crimp Rings 1/2" & 3/4". Allows for a one-handed crimp. Angle head design is useful for working overhead and in tight areas as it easily fits between joists. PEX Cutter: Shear cutter tool ideal for cutting tubing for water applications. Its spring-loaded handle opens easily so you can make multiple cuts quickly and accurately. Cuts through PEX tubings like butter. Compatibility: Ideal for connecting copper crimp rings made to ASTM F1807 standard (Sioux Chief, Watts, Nibco and other brands) with crimp style brass and poly PEX fittings manufactured to ASTM F1807/F877 or F2159 standards respectively (Everhot, Nibco, Watts, Apollo, etc.).