SharkBite U701 PEX Tubing Cutter, 1/4-Inch, 3/8-Inch, 1/2-Inch, 3/4-Inch and 1-Inch No tools required for size change 3/8-inch, -inch, -Inch and 1-Inch. For use with PEX fittings, brass or poly Tool will automatically release after successful clamp connection, no gauge required Tool can be calibrated No soldering, clamps, unions, or glue required. Connects copper, PEX, and CPVC pipe in any combination. Approved to be used underground and behind walls without access panels.