9636 Size: 8" x 1-3/4" Features: -Metal hub semi pneumatic rubber tire.-Ribbed tread.-Economical rust free plastic hubs.-Sturdy ball bearing steel hubs for more demanding applications.-Pneumatic tires.-Diamond tread.-1/2" Bore.-Package type: Carded. Dimensions: -10" x 1-3/4" Dimensions: 10" H x 1.75" W x 10" D.-8" x 1-3/4" Dimensions: 8" H x 1.63" W x 8" D.-12" x 1-3/4" Dimensions: 12" H x 1.75" W x 12" D.