Image Item No. Description By  3139  Tire 14mm D. x 4mm Smooth Small Single Catalog: Parts: Wheel, Tire & Tread 4  59895  Tire 14mm D. x 4mm Smooth Small Single with Number Embossed on Side Catalog: Parts: Wheel, Tire & Tread 3  50945  Tire 14mm D. x 6mm Solid Smooth Catalog: Parts: Wheel, Tire & Tread 1  61254  Tire 24mm D. x 7mm Offset Tread - Band Around Center of Tread Catalog: Parts: Wheel, Tire & Tread 17