SharkBite 24984A 1/2 x 3/8 Service Tee Stop in Retail Package 24984 It can be used on Copper, PEX, CPVC or PE-RT tubing. The SharkBite Tee Stop combines a SharkBite Push-to-Connect tee with a 3/8 Compression line and a quarter turn valve for easy on/off control of the supply line. The Tee Stop also commonly serves as an alternative to a saddle valve. The valve is easily rotated after assembly for easy installation, even in tight spaces. This product is particularly useful for adding supply lines to fixtures such as dishwashers, humidifiers and ice makers.