Ushio MR16 GU5.3 & GX5.3 Base Rim Mount Lamp Holder – BulbAmerica
Amazon.com: Leviton 55 Weatherproof Lampholder, Single Circuit, 660W-250V; With Two 6 Inch Leads, One Black And One White, 14AWG 60C 600V, Free Ends Stripped 3/4 Inch. : Industrial & Scientific
T8 4ft LED Tube/Bulb - Glass 48W 1800 Lumens 5000K Clear, G13 Base, Si
Amazon.com: Leviton 55 Weatherproof Lampholder, Single Circuit, 660W-250V; With Two 6 Inch Leads, One Black And One White, 14AWG 60C 600V, Free Ends Stripped 3/4 Inch. : Industrial & Scientific