This Westbrass angle stop shut off valve with a round handle is the perfect compliment for water closets, faucets or tubs. It uses a 5/8 inch ID (1/2 inch copper) Inlet, designed for soldering the valve in place, and a 3/8 inch OD compression outlet with nut and ferrule. The valves use traditional compression closure for positive seal. Available in a variety of stylish finishes, this item is sure to complement your existing fixtures. Westbrass Fine Decorative Plumbing since 1935.