Make water supply stop installation quickly with the 1/2" x 3/8" Quick-Connect 1/4 turn straight valve water supply stops featuring Watts Quick-Connect technology. The revolutionary quick-connect ends work seamlessly with any 1/2" copper, PEX, or CPVC pipe. Simply make sure pipe is free of burrs, mark 1-1/2" from end of pipe and push the stop onto the pipe making sure stop is completely seated to the line marked on the pipe and it's ready to go. A minimum of 3-1/2" of pipe from the floor or wall is needed to insure correct installation. Quick-Connect Stops require no special tools and can be easily removed by pulling back on the collet ring and reused if needed. Bagged. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces.