Sharkbite PEX Clamp Tool 3-Handle ToolCompresses Stainless Steel Clamp Rings to secure PEX or PE RT tubing to brass or poly crimp fittings. The 3 handle design version allows for one handed gripping keeping the other hand free to hold a flashlight, ladder or pipe. One tool works with all size clamps from 3 8 in. to 1 in. When properly calibrated, this tool eliminates the need to check each fitting ring with a Go No Go gauge. Patented 3 handle design version allows for one handed gripping