This Westbrass Angle Stop Kit with Round Handle is the perfect complement for water closets, faucets, or tubs. It uses a 5/8 in. ID (1/2 in. Copper) Inlet, designed for soldering the valve in place, and a 3/8 in. 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.