Little or minimum effort can be possible on your operator by installing VXB005125PPB1 just ask your operator to push and pull, but not carry. Spinning on wheel that has 125mm diameter/4.921" inch. Sizes of the caster wheel is 45mm (1.772" inch). The height of the wheel caster is 164mm = 6.457" inch. Top Plate is the method of installing the caster to your equipment, dimensions are 115mm x 110mm x 6mm with 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 Side Brake type. The caster wheel temperature range = -40 to 180 F. Buy the VXB005125PPB1 now, we ship on the same day.