Juno Lighting R502B-WH Trac-Lites Round Back Cylinder Line Voltage PAR30 Lamp Holder, White Height: 8-3/8-Inch, Width: 6-Inch Medium base porcelain socket with nickel plated copper screw shell uses either one 45-65-Watt BR30 or one 35-75-Watt PAR30L 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 attached to swivel polycarbonate stem 90-Degree vertical aiming capability and 358-Degree rotation