Higuchi JC5043-50 Watt Halogen Bi-Pin Light Bulb, GY6.35 Base, 12 Volt Base: GY6.35, 2 Pin (6.35 millimeters between pins) 50 Watts, 12 Volts Diameter: 10 millimeters (.39") Length: 44 millimeters (1.73") Life: 2000 Hours