Function and benefits Lifts gates 2 to 5 inches to prevent sagging and reduce stress on hinges, helping gates stay level and operate more smoothly. Durable construction Gate helper wheel combines rubber material with strong steel. It features a coated and galvanized process that enhances wear and rust resistance for long outdoor use. Size and capacity 6inch diameter wheel with a weight capacity up to 500 pounds, designed to support heavy gates without excessive strain. Compatibility and mounting Adjustable steel Ubolts fit round fence tubes with diameters from 15/8 to 2 inches, providing flexible mounting for various gate frame sizes. Use scenarios 1) Residential driveway gate that sags over time, restoring level alignment and easier operation. 2) Heavier gates in windy or traffic outdoor areas, reducing hinge stress and wear. 3) Gates on uneven ground or gravel drives, where the wheel helps maintain smooth movement and clearance.