100 Watt T3 J Type 100Watt Double Ended Clear 100W Halogen Bulbs 120 Volt 78mm or 3-1/8 inch One bulb 100 Watt J Type DE T3 shape 3-1/8"inch (78mm ) 120 Volt 100W 100Watt Halogen Bulb Anyray Brand J type Halogen light bulbs Works with 110 Volt , 120 Volt and 130 Volt as well , Long Life: Approx. 2,500 Hours bulb life Versatile Usage: Applicable Home, Office, Restaurants, and Stores R7s base