Measuring 4 foot (1200mm) in length this wonderful Violet coloured LED T8 sleeve cover is a great option for changing the output of your LED tube to create a totally new feel to your room for parties events and gatherings. It is 32mm in diameter making it suitable for most major brands of LED T8 tube. Installing this product is an easy process all that is required is that you uninstall your current 1200mm LED tube slide the clear sleeve violet coloured insert over the tube and then reinstall your LED T8 tube. Please be aware that this product comes as a clear tube with a coloured Violet coloured insert and that both parts are required for this product to work. Not suitable for T8 or T12 fluorescent lights and does not come with or require end caps.