Heavy weight capability and Durability made the wheel casters like the VXB005125PPF a must use, get your do it yourself object move around from our Toronto biz. Wheel dia. is 125mm or 4.921" inch in inches. Sizes of the caster wheel is 45mm (1.772" inch). The height of the wheel caster is 164mm = 6.457" inch. Mounted via a Top Plate that has a size of 115mm x 110mm x 6mm and the holes distance of 72mm x 85mm. The weehl core material is Polypropylene and has a Polypropylene tire with a low friction Double ball beaing. Maximum load calpacity that could not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 1543 lb with a Fixed type. The Temperature range is -40 to 180 F. Order the VXB005125PPF now, just add the quantity to basket and click on Checkout.