eToplighting 15-Pack, 20 Watt Bi-Pin Halogen Light Bulb, 12 Volt, G4 Base, 20 Watt JC Type Bulb, 15XG4-12V-20W Set of 15, JC Type G4 Halogen Bulb 12V 20W Base: G4 Clear Bi-Pin Base (4 Millimeters between Pins) Dimension: See Picture Long Life: 1.5 years (Based on 3 hours/day) | Color Temperature: 2800K Versatile Usage: Applicable Home, Office, Restaurants, and Stores High Brightness & Energy efficient light bulb