I bought my first bunkybed light 4 years ago for my daughter's highsleeper and it is still going strong. It has never needed a replacement bulb or part. The light fits really easily and quickly on the tubular type bed, using the special mounting clip, and there is a another type of mount in the box to fit over a standard headboard. (no screwing needed with either method). I have recently bought another one off Amazon for my sons bed. Fits perfectly again even though tubes on his bed are much narrower. The light is so safe for kids as it stays really cool, even when left on all day. The kids love their lamps because they are flexible, can be bent into position to suit whatever they are doing, switched on and off from their sleeping position and just look really cool!!! My only critism is that the lead could be slighty longer, but with a bit of faffing around, and using a plug extension socket, this was easily overcome. More down to our bedroom layouts than anything else!!! These were the only type of this lamp I could find on the market, with a secure fitting and cool bulb. I cannot recommend them highly enough.