Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB004100TPR1. Diameter size of the caster wheel has a metric standard 100mm which is equal to 3.937" inch with imperial units. Dimensions of the caster wheel is 30mm (1.181" inch). The Caster with the wheel from end to end is 130mm = 5.118" 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. Low drag was achieved by a Thermoplastic Rubber core on a Thermoplastic Rubber tire spinning freely with a Ball bearing. Bearing in mind that every caster wheel has the load capacity of 198 lb with a Swivel type. Temperature range is -40 to 180 F. Buy our VXB004100TPR1, we wish all the best.