General description This set of 4 sliding gate wheels features a U groove design, ideal for various applications including front doors, factory doors, sliding fences, dog doors, reverse tracks, industrial machines, rolling doors, and container shelves. Made from high-quality galvanized steel, these wheels are strong, waterproof, and resistant to corrosion. Technical specifications Diameter of the wheel: 50mm Inner width: 27mm Load capacity: 300kg per wheel Bracket thickness: 3mm Usage These U groove wheels are designed for easy installation on 19mm round tube orbits, providing smooth and stable gliding for heavy gates. The double ball bearings ensure a stable and smooth sliding experience, making it easy to push the gate.