Plastic dock wheels are designed for roll-in docks and boat lifts. Made of heavy duty, rotomolded plastic. Large diameter rolls easily on all terrains. Designed for maximum strength with no maintenance requirements. Pre drilled with drain holes. Molded from UV stabilized polyethylene. 24" Diameter with a 8" tread width. Fits axle sizes 1.60" to 1.90" diameter. | Taylor Made Dock Roller Wheel Black 24"