Triangle Bulbs T10077-10 (10 pack) - Q40/G9/CL/120V, 40 Watt, T4 JD Type, 120 Volt, Clear, G9 Bi-pin Base, Halogen Light Bulb, 10 Pack (10) x jcd type G9 halogen bulb 120V 40W (works with 110 - 130V as well) Base: G9 bi-pin base dimension: see picture Long life: approx. 2,500 hours bulb life High brightness & energy efficient light bulb Versatile usage: applicable home, office, restaurants, and stores