Mounting VXB004125CPUB is the Low cost solution of making a project to move around by pushing or pulling. The wheel diameter is 125mm or 4.921" inch in inches. The wheel has a width of 32mm=1.260" inch. The caster dimensions heightwise is 156mm/6.142" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 93mm x 62mm with the holes distance of 45mm x 72mm. Low drag was achieved by a Iron and Polyurethane core on a Iron and Polyurethane tire spinning freely with a Double ball bearing. Each caster will carry the load of 331 lb and is Swivel and Upper Brake type. Temperature range is -40 to 180 F. Buy our VXB004125CPUB, we wish all the best.