Moves large items quicker using the VXB004100CPUF. And rolling on wheel that has 100mm diameter/3.937" inch. The wheel has a width of 32mm=1.260" inch. The caster dimensions heightwise is 130mm/5.118" inch. Mounted via a Top Plate that has the size of 93mm x 62mm and the holes distance of 45mm x 72mm. The weehl core material is Iron and Polyurethane and has a Iron and Polyurethane tire with a low friction Double ball bearing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 265 lb with a Rigid type. Environment temperature range is -40 to 180 F. Very important notice, you need to buy the VXB004100CPUF in order to get one :).