Watts AquaLock™ 1/2" x 3/8" Plastic Push to Connect Reducing Stem Fitting

This 1/2" CTS x 3/8 " CTS plastic push-to-connect reducing stem incorporates stainless steel gripping teeth in the collets. These corrosion-resistant teeth allow the fitting to interconnect with multiple materials without the need for special tools or tube inserts. It works with copper, CPVC, PEX (LDPE, MDPE, HDPE), non-oxygen barriers, or single-layer PEX tubing.