MINOURA FG540 Hybrid Roller Load Unit: 7-level load adjustment, magnetic resistance Compatible Wheel Sizes: 650c～700c, 26 inches～29 inches (wheelbase 950～1,200mm) Please note that there are no instruction manual or warranty. When purchased, it was used with a quick release, but it has been converted to use with through-axle replacement parts due to a change in the bike frame. The quick release replacement parts before the conversion are also included. There are no major scratches or malfunctions, but there is some rust on the screws. There is no problem with use. Please refer to the photos to judge the condition of the product. Returns and claims are not accepted after the transaction is completed. This is a used item, so please refrain from purchasing if you are overly concerned about the condition or are a perfectionist.