Little or minimum effort can be possible on your operator by installing VXB20050BPP2L just ask your operator to push and pull, but not carry. Wheel dia. is 50mm or 1.969" inch in inches. The wheel has a width of 50mm=1.969" inch. The caster dimensions heightwise is 48mm/1.890" inch. Mounted via a that has a size of 38mm x 38mm and the holes distance of 129mm x 74mm. Low drag was achieved by a Polypropylene core on a Polypropylene tire spinning freely with a Roller bearing. Having in mind that every caster wheel has the load capacity of 77 lb with a Swivel type. The caster wheel temperature range = -40 to 180 F. Buy the VXB20050BPP2L now, we ship on the same day.