Mounting VXB20050NYS1B is the Low cost solution of making a project to move around by pushing or pulling. Diameter size of the caster wheel has a metric standard 50mm which is equal to 1.969" inch with imperial units. Dimensions of the caster wheel is 50mm (1.969" inch). Overall height of the wheel caster is 48mm = 1.890" inch. Mounted via a that has the size of 34mm x 34mm and the holes distance of 129mm x 74mm. This caster wheel core material is Nylon and has a Nylon tire spinning over Roller bearing. Bearing in mind that every caster wheel has the load capacity of 66 lb with a Swivel and Upper Brake type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB20050NYS1B in order to get one :).