1/2" Female Compression x 1/2" Male Compression x 3/8" Female Compression, Brass, Supply Stop Extender Tee, Swivel Screw On Hook Up, Creates A Branch Outlet From A Supply Stop, For Use With Hot Or Cold Water To Connect Icemakers, Dishwashers, Water Filters Or Other Accessories Which Require 1/4" OD Or 3/8" OD Water Supply, Lead Free.