Minimization of possible untoward effects on operator by installing VXB009C300BCPUF just ask your operator to push and pull, but not carry. The wheel diameter is 300mm or 11.811" inch in inches. The thickness of the wheel is 75mm or 2.953" inch. The Caster with the wheel from end to end is 365mm = 14.370" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 200mm x 153mm Top Plate: 14mm+housing: 10mm with the holes distance of 160mm x 90mm. The weehl core material is Cast iron polyurethane and has a Cast iron polyurethane tire with a low friction Precision double ball bearing. Bearing in mind that every caster wheel has the load capacity of 3307 lb with a Fixed type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB009C300BCPUF in order to get one :).