Triangle Bulbs T10007-10 (10 pack) - Q20/G4/CL/12V, 20 Watt, T3 JC Type, 12 Volt, Clear, G4 Bi-pin Base, Halogen Light Bulb, 10 Pack Set of 10, jc type G4 halogen bulb 12V 20W Base: G4 clear bi-pin base (4 millimeters between pins) dimension: see picture Long life: approx. 2,000 hours bulb life Versatile usage: applicable home, office, restaurants, and stores High brightness & energy efficient light bulb Set of 10, JC Type G4 Halogen Bulb 12V 20W Base: G4 Clear Bi-Pin Base (4 Millimeters between Pins) Long Life: Approx. 2,000 Hours bulb life Versatile Usage: Applicable Home, Office, Restaurants and Stores High Brightness & Energy efficient light bulb