Mounting VXB007B042PVCB is the Low cost solution of making a project to move around by pushing or pulling. And rolling on wheel that has 42mm diameter/1.654" inch. The wheel has a width of 22mm=.866" inch. Overall height of the wheel caster is 60mm = 2.362" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 60mm x 43mm with the holes distance of 45mm x 30mm. The weehl core material is Polyvinyl Chloride and has a Polyvinyl Chloride tire with a low friction Ball bearing. Each caster will carry the load of 44 lb and is Swivel and Upper Brake type. Environment temperature range is -40 to 180 F. Very important notice, you need to buy the VXB007B042PVCB in order to get one :).