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