SharkBite PEX crimp multi-head tool kit includes a PEX (Cross-linked Polyethylene) crimp tool, barb fittings, "go/no-go" gauge, adjustment tools and case. Designed to compress copper crimp rings to secure PEX or PE-RT tubing to brass or poly crimp fittings, our PEX pipe tool is available in a range of sizes to fit various installation needs.