1-piece, glazed porcelain lampholder with pull chain. 2 screw terminals, 4-1/2 inch outside diameter with knockouts to fit 3-1/4 inch or 4 inch outlet box. Includes captive mounting screws. Removable interior top wired. Short chain with 3 foot braided cord and bell included. Shade holder groove. 660-watt/250-volt. UL (Underwriter's Laboratories) listed.