Pack Of 20 Q10//G4/CL/12V 10 Watt T3 JC Type 12 Volt Clear G4 Bi-pin Base Halogen Light Bulb 20 pack, JC Type G4 Halogen Bulb 12V 10W Base: G4 Clear Bi-Pin Base (4 Millimeters between Pins) Halogen light bulbs have a longer life and a higher light output than incandescent bulbs Long Life: Approx. 2,000 Hours bulb life High Brightness & Energy efficient light bulb Versatile Usage: Applicable Home, Office, Restaurants, and Stores Halogen bulbs have a whiter and brighter light and less blackening, dimmable with most dimmers