SharkBite brass 1/2-in compression x 3/8-in OD compression quarter turn dual shut-off full-port brass ball valve valve. SharkBite quarter turn ball valves with compression connections are a secure way to provide water to ice makers, toilets and faucets. Attach the valve to the pipe using the compression nut and ferrule, tightening with a wrench. Then connect the supply line to the valve. The quarter turn shut off provides an easy and maintenance free shut off for your fixtures. Compatible with copper pipe