Blackburn Fluid Bike Trainer - Black/Tan Up to 1,000 watts of tuned, progressive resistance. Resistance unit is quiet, consistent, smooth, and will never leak oil. Fastcrank mounting system gives you a little extra leverage and allows for simple and quick installation. Cam release lets you isntall the same bike with a flick of a switch and no additional adjustment. Trainer block raises your front wheel to level your bike and make for a much more comfortable ride. Includes steel quick release wheel skewer so that your original equipment does not get scratched. Wheel compatible with most road and mountain bike wheels sizes. This includes the diameters 26", 650b, 700c, 27.5" and 29" and widths from 23c up to 2.3"