【STURDY CONSTRUCTION】The heavy duty gate wheel made from hard tire grade rubber and solid steel plate with superior powder coat finish & zinc plated, wear resistance, corrosion resistance, rust-proof for long lasting outdoor use. Strong load bearing support for each gate caster, easy to open or close large, heavy gates..【ONLY for ROUND PIPE】The 6 inch hard rubber gate support wheel comes with adjustable Steel U-Bolt for mounting, fits 1-5/8 inches through 2 inches round fence pipe, Lift your Gate Up to 8-1/4". Prevent Gate from Dragging. Please check your gate frame diameter before buying..【EASY INSTALLATION】 Come with all mounting hardware for quick installation, Just attach the wheel on the bottom rail of the gate and adjust the angle to make sure the wheel touch the ground, Tighten U-bolt nuts securely until helper gate wheel couldn’t slip around the pipe..【SUPPORT WEIGHT UP TO 500LBS】HILLMASTER durable gate helper wheel can easily hold up 500lbs, preventing the gate from sagging and saving gate hinges, perfect for chain link fence gate, ranch gate, cattle fence, farm pipe gates, pool gate, metal gate, swing gate, garden, yard, patio, driveway, moving smoothly on grass, gravel ground and concrete..【PROFESSIONAL GUARANTEE】We are specialized in producing various hardware fittings, please go find all kinds of home hardware fittings you need in HILLMASTER store and enjoy it! If you are not satisfied with our products, please feel free to contact us. We are committed to providing the professional products and the caring service for every consumers.