Dear friend, thanks for your attention to our products, we can supply u good tyre and wheel,welcome to know more SIZE OF BICYCLE TUBE 12*1.7514*1.7516*1.75/2.12518*1.7520*1.75/1.9522*1.75/1.9524*1 3/824*1.50/1.7524*1.95/2.125/2.3526*1 3/826*1.50/1.7526*1.95/2.125/2.3527*1 1/428*1 1/2700*38C^^……………………more sizes will be found on our website,www.lake-sea.com 26*2 1/2 bicycle tyre