GE 20835-50 Watt Halogen Light Bulb - MR16 - Constant Color Precise - EXZ Narrow Flood - Open Face - 6,000 Life Hours - 12 Volt Base: 2-Pin, GX5.3 (5.3 millimeters between pins) EXZ ANSI Code: 50 Watts, 12 Volts, 25 Degree Beam Spread Shape: MR16 (2" Diameter, 1 7/8" Length) Life: 5000-6000 Hours