... -4 350-6 400-8etc. 2.good gas tightness 3. tire inner tube 4,OEM accepted 1. Variety: Pneumatic Wheel,Solid Wheel,Foam ... flower,Big Flower and moreTyre Colour: Black,redetc2.3. Inner Tube Material: Natural rubberInner Tube Rubber Percentage: 20%,30%,40% and more2.4 ... : for wheel barrow,hand trolley,tool cart etc 2.5. tire inner tube 3.50-8 tire inner tube 3.50-8