Triangle Bulbs T10363-10 (10 pack) - T3S-120V-250W-10 120V 250W J Type Double Ended T3 Halogen Light Bulbs, 78mm, 10 pack (10) x j type double ended T3 120V 250W 78Mm halogen light bulb Size: see pictures above Long life: approx. 2,000 hours bulb life