Moves large items quicker using the VXB004125PHF. Diameter size of the caster wheel has a metric standard 125mm which is equal to 4.921" inch with imperial units. The thickness of the wheel is 30mm or 1.181" inch. The Caster with the wheel from end to end is 155mm = 6.102" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 93mm x 62mm and holes distance of 45mm x 72mm. The weehl core material is Phenolic and 0-250ºC and has a Phenolic and 0-250ºC 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 220 lb with a Rigid type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB004125PHF in order to get one :).