Juno Lighting R532SC Trac-Lites Flared Gimbal Line Voltage PAR30 Lamp Holder, Satin Chrome Height: 5-1/4-Inch, Width: 4-1/4-Inch Medium base porcelain socket with nickel plated copper screw shell uses one 35-75-Watt PAR30 lamp Copper alloy contacts provide precise spring action - no arcing, will not take a set and pulls to up position for two-circuit application Drawn steel housing with stamped gimbal ring swivels and tilts 90-Degree vertical aiming capability and 358-Degree rotation