35mm-Lock-Swivel-Caster-001 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 35mm that is equal to 1.378" inch with imperial units. The thickness of the wheel is 35mm or 1.378" inch. The Caster with the wheel from end to end is 50mm = 1.969" inch. Top Plate is the method of installing the caster to your equipment, the dimensions are 42mm x 42mm with the holes distance of 129mm x 74mm. Rolling with a wheel core material of Polyurethane and a Polyurethane tire rolled over Roller bearing. Bearing in mind that every caster wheel has the load capacity of 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 35mm-Lock-Swivel-Caster-001 in order to have it :).