Smooth ball design Solid brass that has a polished and lacquered finish Measures 1-3/8 inch tall and the ball has a 7/8 inch diameter Tapped 1/4-27, which is the size for standard harps B&P Lamp Solid Brass Sphere Style Polished and Lacquered Finial, 1-3/8 Inch Height, 1/4-27 Tap - Sphere style solid brass finial, 1/4-27 tap base for use on standard harp. Features Include: Smooth ball design, Solid brass that has a polished and lacquered finish, Measures 1-3/8 inch tall and the ball has a 7/8 inch diameter, Tapped 1/4-27 which is the size for standard harps