... butyl tube).The sizes as follows,2.25-17,2.50-16,2.50-17,2.50-18,2.75-14,2.75-17,2.75-18,2.75-21,3.00-8,3 ... .00-10,3.00-12,3.00-16,3.0-17 ... ,3.00-18,3.25-16,3.25-18,3.50-8,3.50-10,3.50-16,3.50-18,3 ... .75-19,4.00-8,4.00-12,4.10-18,4.50 ... -12,80/90-17,90/90-12,90/90-18,100/90 ...