Mounting VXB012150PFF is the economoical solution of building project to move around by pushing or pulling. Wheel dia. is 150mm or 5.906" inch in inches. Sizes of the caster wheel is 50mm (1.969" inch). The Caster with the wheel from end to end is 190mm = 7.480" inch. Top Plate is the method of installing the caster to your equipment, dimensions are 160mm x 114mm with the holes distance of 129mm x 74mm. This caster wheel core made of Phenolic and 0-180ºC and has a Phenolic and 0-180ºC tire spinning over Roller bearing. Having in mind that every caster wheel has the load capacity of 882 lb with a Fixed type. Ambient temperature range is -40 to 180 F. FYI, you will need to buy the VXB012150PFF in order to get one :).