Key benefits Heavy duty construction for outdoor use: tiregrade solid rubber wheels and sturdy steel with a blackcoated hotdip electroplating finish provide long life, load bearing, and resistance to wear and rust. load capacity with gate sag reduction: 6 in wheel diameter and 83/4 in lift height from wheel base to pipe mast center enable support up to 500 lbs, helping prevent gate sag and reducing strain on hinges and frames. Easy, secure installation: steel Ubolts fit round fence pipes from 15/8 in to 2 in diameter. Height is adjustable with the included washers and nuts; tightening with a wrench yields a secure fit and minimizes slipping. Smooth performance on various terrains: 6 in hard rubber wheels roll well on concrete, grass, and other surfaces. For softer surfaces like pea gravel, use a solid material under the wheels to ensure smoother movement. Specifications and features Wheel diameter: 6 inches Lift height: 83/4 inches from wheel base to pipe mast center Weight capacity: up to 500 lbs Wheel material: tiregrade solid rubber Frame material and finish: sturdy steel with a blackcoated hotdip electroplating finish Mounting fit: steel Ubolts for round fence pipes from 15/8 inches to 2 inches in diameter Installation: includes washers and nuts for height adjustment; secure with a wrench Installation and usage tips Install the wheel assembly under the gate on a suitable support location to minimize gate sag and distribute weight more evenly. Choose fence pipe size within the 15/8 inch to 2 inch range to ensure a proper fit with the Ubolts. Use the included washers and nuts to adjust height as needed; tighten with a wrench for a secure, slipresistant installation. On soft surfaces, consider placing a solid base under the wheels to promote smoother movement and reduce resistance. Use scenarios Residential driveway gate: install under a long gate to prevent sag, protect hinges, and extend gate life. Farm or ranch gate on grass or uneven ground: provides stable support and helps maintain gate alignment with less effort. Temporary or portable gate on soft ground: adjustable height and durable materials enable reliable mobility and quick setup, with a solid base under the wheels if needed.