Wheels are available in 18" or 24" diameters and up to 700 lb. capacity per wheel. These tough, rigid wheels offer stress, crack and impact resistance. They roll easily over virtually any terrain and will not rust on the axle. Use for roll-in docks or boat lifts. All wheels accept a 1-7/8" O.D. Axle. HD Wheel capacity exceeds 700 lb ea.