... .good gas tightness 3. 3.50-4 Pneumatic Wheel 4,OEM accepted 1. Variety: Pneumatic Wheel,Solid Wheel,Foam Wheel,Tubeless Wheel ... .5,8"x2.50-4,10"x3.00-4,10"x3.50-4,12"x3.50-6,13"x3.25/3.50-8 ... ,hand trolley,tool cart etc 2.5. 3.50-4 Pneumatic Wheel 3.50-4 ...