Minimization of possible untoward effects on operator by installing VXB004125HPVC just ask your operator to push and pull, but not carry. And rolling on wheel that has 125mm diameter/4.921" inch. The wheel has a width of 30mm=1.181" inch. The Caster with the wheel from end to end is 155mm = 6.102" inch. Mounted via a Top Plate that has the size of 93mm x 62mm and the holes distance of 45mm x 72mm. This caster wheel core material is Polyvinyl Chloride and has a Polyvinyl Chloride tire spinning over Double ball bearing. Bearing in mind that every caster wheel has the load capacity of 176 lb with a Swivel type. Temperature range is -40 to 180 F. Buy our VXB004125HPVC, we wish all the best.