Heavy weight capability and Durability made the wheel casters like the VXB004125RB a must use, get your do it yourself object move around. The wheel diameter is 125mm or 4.921" inch in inches. Dimensions of the caster wheel is 35mm (1.378" inch). The Caster with the wheel from end to end is 157mm = 6.181" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 93mm x 62mm and holes distance of 45mm x 72mm. This caster wheel core material is Rubber and has a Rubber tire spinning over Ball bearing. Bearing in mind that every caster wheel has the load capacity of 176 lb with a Swivel type. The caster temperature range = -40 to 180 F. Buy our VXB004125RB, we wish all the best.