... .good gas tightness 3.13x3 solid wheel 4,OEM accepted. 1. Variety: Pneumatic Wheel,Solid Wheel,Foam Wheel,Tubeless Wheel,Castor Wheel, Wheelbarrow Tyre&tube and etc ... Material: Natural rubberInner Tube Rubber Percentage: 20%,30%,40% and more2.4.Wide Range of Use: for wheel barrow,hand trolley,tool ...