Utilizing VXB007040B1 makes it feasible to pull and push items instead of transport Diameter size of the caster wheel has a metric standard 40mm which is equal to 1.575" inch with imperial units. Dimensions of the caster wheel is 17mm (.669" inch). The Caster with the wheel from end to end is 54mm = 2.126" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 45mm x 40mm and holes distance of 35mm x 28.5mm. This caster wheel core material is Rubber and has a Rubber tire spinning over Delrin bearing. Each caster will carry the load of 44 lb and is Swivel and Center Brake type. The caster temperature range = -40 to 180 F. Buy our VXB007040B1, we wish all the best.