Thanks to the Quick Release quick release system, it can be mounted on almost all seatposts without using tools and in a few seconds. Fits 29 "and 27.5" plus wheels perfectly. Includes five 15-35mm cone adapters: 15-19mm, 19-23mm, 23-27mm, 27-31mm, 31-35mm. Weight: Front: 112 grs. / Rear: 239 grs. Max width tire size: 3.0 inches (76 mm). Tube diameter: 35mm. Length: Front: 680mm / Rear: 620mm.