This new kind of lamps doesn磘 need a ballast. 2-Pin Ends Allows Direct Plug-in into Existing Fixtures Power: 8W, 15W, 24W Length: 60cm (24"), 120cm ( 48"), 150cm (60") Flux: 8W:650 Lm, 15W:1100 Lm, 24W:1600 Lm Color Temperature:3000~3500K (Warm), 6000~6500K (White) Beam angle: 120?(Bullet or helmet LED) Operating Voltage: 80VAC-240VAC, 50/60Hz *To be used in light fixtures, you need to remove or skip the ballast and drivery. Lifetime: >= 60,000 Hours CE certificate approved