Make your life easier, have big objects easier to Maneuver using the VXB004125TPR1B Wheel Caster. And rolling on wheel that has 125mm diameter/4.921" inch. The thickness of the wheel is 30mm or 1.181" inch. The Caster with the wheel from end to end is 155mm = 6.102" 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 73mm x 45mm. The Ball bearing design will enable the Thermoplastic Rubber tire to roll easily with a core made of Thermoplastic Rubber. Each caster will carry the load of 220 lb and is Swivel and Upper Brake type. Environment temperature range is -40 to 180 F. Very important notice, you need to buy the VXB004125TPR1B in order to get one :).