... . 2.good gas tightness 3. 3.50-4 Pneumatic Wheel 4,OEM accepted 1. Variety: Pneumatic Wheel,Solid Wheel,Foam Wheel,Tubeless Wheel,Castor ... Size:6"x1.5,8"x2.50-4,10"x3.00-4,10"x3.50-4,12"x3.50-6,13"x3.25 ... more2.4.Wide Range of Use: for wheel barrow,hand trolley,tool cart etc 2.5. 3.50-4 Pneumatic Wheel 3.50-4 Pneumatic ...