This is an Osram 2.5w LED Filament Clear GLS with a Edison Screw and a 2700k Extra Warm White colour output. It features a filament style LED design internally which replicates traditional filament lamps. Boasting a lumen output of 250 lumens and a lifespan of 15000 hours The 2.5w is an equivalent to the 18w Halogen and the 25w incandescent GLS, perfect for use around households and retail applications. These lamps are non dimmable. Dimensions: Length 77mm - Diameter 45mm Osram Part Number: 4058075287983