Bulbrite 40T10BL 40-Watt Incandescent Tube T10, Medium Base, Black Light [4 Pack] Get the perfect light with the T10 E26 Medium Screw 40 watt 120 volt Incandescent light bulb. Box contains 1 bulb. Dimmable: Yes, Black Light Average hours: 2000, Beam Spread: 360, MOD: 1.25, MOL: 5.00