This is a Osram 12w LED T9 Circular Tube in a 6500k Daylight colour to replace the 22w circular fluorescent tube. The 12w tube offers energy savings of 45% and a lumen output of 1200 lumens. These lamps are often used in domestic applications such as kitchens and bathrooms as well as offices and walkways. This circular tube has a G10q cap and is to be used in fixtures that have a ballast that\'s conventional (EM) or mains (AC).All you need to do is simply remove the old tube and starter and replace with the LED T9 tube and starter supplied. They can also be used in high frequency fittings, by bypassing the control gear and wiring directly to the mains. They have an average lamp life of 30,000 hours and a 2 year warranty to give the customer extra peace of mind and significantly reduce maintenance costs. Dimensions: 205mm (L) x 30mm (W) The Osram Reference: 4058075135468 General Characteristics Wattage [W] 12w Lumens [lm] 1200lms Cap/Base G10q Lifetime 30000 hours Dimmable No Beam Ang 123 Colour [K] 6500k Daylight