A Set of Four Brand New Double Heavy Duty 8" Rubber Caster Wheel With Loading Capacity 800 Lbs , Equipped with step scaffold wheel locking double brakes and grease-able bearings , Solid Stem is 1 3/8" in diameter Have two holes compatible at 2" and 2 1/2"Swivel 360 degree , The Shipping Weight 50 Lbs.