Minimization of possible untoward effects on operator by installing VXB20040HLB just ask your operator to push and pull, but not carry. The wheel diameter is 35mm or 1.378" inch in inches. The wheel has a width of 35mm=1.378" inch. Overall height of the wheel caster is 50mm = 1.969" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 42mm x 42mm with the holes distance of 129mm x 74mm. This caster wheel core material is Polyurethane and has a Polyurethane tire spinning over Roller bearing. Bearing in mind that every caster wheel has the load capacity of 44 lb with a Swivel and Upper Brake type. Temperature range is -40 to 180 F. Buy our VXB20040HLB, we wish all the best.