Low cost solution to the heavy weight objects movement, Wheel casters like our VXB20050NYT are used to roll your machine or equipment back and forth. And rolling on wheel that has 50mm diameter/1.969" inch. Dimensions of the caster wheel is 50mm (1.969" inch). The caster dimensions heightwise is 57mm/2.244" inch. This wheel caster can be mounted using a with the dimensions of 34mm x 34mm and 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 type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB20050NYT in order to get one :).