- Durable Rubber Wheel: Tire-grade solid rubber wheel is wear-resistant and suitable for outdoor use (farm, park, playground). Rollable gate wheel for metal tube gates. Teeth on the U-bolt and wheel bracket provide enhanced stability and security to any fence gate. - Strong Steel Construction: Solid steel frame resists rust and allows firm mounting with high load-bearing capacity. The link parts are durable iron with a hot-dipped galvanized finish for rust-proof performance. - Gate Helper Caster: Heavy-duty gate wheel enables smooth opening and closing, prevents gate sagging and dragging on the ground, and keeps the fence line level. Wheels roll smoothly with minimal effort and support gate weight up to 560 lbs. - Widely Used: Suitable for round tube swing gates from 1-5/8" to 2" diameter and for chain link fences. Flexible mounting angle fits most fence gates such as chain link gates, metal swing gates, farm fence gates, and driveway gates. Compatible with concrete, grass, and muddy ground.