Specifications: 1) Diameter: a) T12: 38mm b) T10: 32mm c) T9: 29mm d) T8: 26mm e) T5: 16mm 2) Voltage: 110-130V , 220-40V 3) Watts: a) T10, T12: 20, 40W b) T9: 20, 40W c) T8: 10, 15, 18, 36W d) T5: 4, 6, 8, 14, 21, 28, 35W 5) Operating life: 3, 000-7000 hours 6)Temperature: 2700K-6400K 7)Color: blue, red, green Inner packing: 1pc/sleeve Outer packing: 25pcs/ctn