Make your life easier, have big objects easier to Maneuver using the VXB20050NYTB Wheel Caster. And rolling on wheel that has 50mm diameter/1.969" inch. The thickness of the wheel is 50mm or 1.969" inch. The Caster with the wheel from end to end is 57mm = 2.244" inch. is the method of installing the caster to your equipment, here are the dimensions 34mm x 34mm with the holes distance of 129mm x 74mm. The Roller bearing design will enable the Nylon tire to roll easily with a core made of Nylon. Each caster will carry the load of 66 lb and is Swivel and Upper Brake type. Environment temperature range is -40 to 180 F. Very important notice, you need to buy the VXB20050NYTB in order to get one :).