eTopLighting G4-12V-20W-20P 20W 12V T3 JC Type Halogen Clear G4 Bi-Pin Base Light Lamp Bulbs (Pack of 20) Set of 20, 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