Mounting 4inch-Swivel-Caster-014 is the solution of making your project to move around by pushing. This caster is rolled on a wheel that has 100mm diameter/3.937" inch inches. The wheel has a width of 30mm=1.181" inch. The caster dimensions heightwise is 130mm/5.118" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 93mm x 62mm and holes distance of 73mm x 45mm. The Ball bearing design will enable the Thermoplastic Rubber tire to roll easily with a core made of Thermoplastic Rubber. Here come the maximum load that should be applied on every wheel, remember to add safety factor, when calculating the load capacity 198 lb with a Swivel type. Temperature range = -40 to 180 F. Remember, you will have to buy the 4inch-Swivel-Caster-014 in order to have it :).