Mounting 5inch-Swivel-Caster-026 is the solution of making your project to move around by pushing. Diameter of the caster wheel is a metric standard 125mm that is equal to 4.921" inch with imperial units. The wheel has a width of 50mm=1.969" inch. The caster dimensions heightwise is 167mm/6.575" inch. Mounted via a Top Plate that has the size of 100mm x 115mm and the holes distance of 75mm x 85mm. The caster core is made of Polypropylene core and Polyurethane and has a Polypropylene core and Polyurethane tire with a low friction Double ball beaing. Bearing in mind that every caster wheel has the load capacity of 507 lb with a Swivel type. The temperature range is -40 to 180 F. Remember, you will have to buy the 5inch-Swivel-Caster-026 in order to have it :).