2inch-Lock-Swivel-Caster-018 is a wheel caster, which is the shortcut of installing wheels on a hospital bed, or any objexct needed to be moved. Diameter of the caster wheel is a metric standard 50mm that is equal to 1.969" inch with imperial units. The wheel has a width of 17mm=.669" inch. The caster dimensions heightwise is 69mm/2.717" inch. Mounted via a Top Plate that has the size of 50mm x 50mm and the holes distance of 36mm x 36mm. Low drag was achieved by a Polyvinyl Chloride core on a Polyvinyl Chloride tire spinning freely with a Plain bearing. Here come the maximum load that should be applied on every wheel, remember to add safety factor, when calculating the load capacity 44 lb with a Swivel and Upper Locking type. Last and not least the temperature range = -40 to 180 F. Remember, you will have to buy the 2inch-Lock-Swivel-Caster-018 in order to have it :).