Image Item No. Description  4624c02 (Inv)  Wheel 8mm D. x 6mm with Black Tire 15mm D. x 6mm Offset Tread Small (4624 / 3641) Catalog: Parts: Wheel & Tire Assembly  4624c02 (Inv)  Wheel 8mm D. x 6mm with Black Tire 15mm D. x 6mm Offset Tread Small (4624 / 3641) Catalog: Parts: Wheel & Tire Assembly  4624c02 (Inv)  Wheel 8mm D. x 6mm with Black Tire 15mm D. x 6mm Offset Tread Small (4624 / 3641) Catalog: Parts: Wheel & Tire Assembly  4624c02 (Inv)  Wheel 8mm D. x 6mm with Black Tire 15mm D. x 6mm Offset Tread Small (4624 / 3641) Catalog: Parts: Wheel & Tire Assembly