Show With details ::  ET "JR." ET "JR." by Mickey *Wrinkle Wall *Lightweight *State-Of-The-Art Construction Part No Compound Size weight Measuring Rim Sidewall Width Tread Width Overall Diameter Suggested Tube Circumferance 3621 M2 18/8-8 5.8 8 10.5 7.3 18.0 Tubeless 55 3644 M2 19/8-10 9.2 8 9.5 7.2 19.5 Tubeless 61