... -6 250-4 350-6 400-8etc. 2.good gas tightness 3. 2.50-4 Pneumatic Wheel 4,OEM accepted 1 ... Wheel,Tubeless Wheel,Castor Wheel, Wheelbarrow Tyre&tube and etc.2. Pneuamatic Wheel=Tyre + Tube + Rim assembled2.1. ... x3.50-6,13"x3.25/3.50-8,14"x4.00-8 etc2.2. Tyre Layer: 2ply,4ply,6plyTyre ... Pattern: LUG,Direct,Diamond flower,Big Flower and moreTyre Colour: Black,redetc2.3. ...