Make your life easier by moving oversize large objects much much easier using the VXB009C300BCPU Wheel Caster. Wheel dia. is 300mm or 11.811" inch in inches. Sizes of the caster wheel is 75mm (2.953" inch). The caster dimensions heightwise is 365mm/14.370" inch. This wheel mounting is Top Plate with the dimensions of 200mm x 153mm Top Plate: 14mm+housing: 10mm and holes distance of 160mm x 90mm. This caster wheel core made of Cast iron polyurethane and has a Cast iron polyurethane tire spinning over Precision double ball bearing. Each caster wheel will carry the load of 3307 lb and is Swivel type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB009C300BCPU in order to get one :).