Image Item No. Description  66155c04 (Inv)  Wheel 30.4mm D. x 20mm with Center Axle Holes Motorcycle and Black Tire 56 x 26 Balloon (66155 / 55976) Catalog: Parts: Wheel & Tire Assembly  56145c06 (Inv)  Wheel 30.4mm D. x 20mm with No Pin Holes and Reinforced Rim with Black Tire 56 x 26 Tractor (56145 / 70695) Catalog: Parts: Wheel & Tire Assembly  56145c06 (Inv)  Wheel 30.4mm D. x 20mm with No Pin Holes and Reinforced Rim with Black Tire 56 x 26 Tractor (56145 / 70695) Catalog: Parts: Wheel & Tire Assembly