YMYNY 4 pieces wheels for sliding gate 50 mm, steel wheels with U-groove, U-groove wheel for return rail, industrial machine, roller door, load capacity

MATERIAL: This U groove wheel is made of high quality galvanized steel, strong, waterproof and corrosion resistant SIZE: The wheel diameter is 50mm, the inner width of the outer width is 27mm, suitable for 19mm round tube orbital track LOADING CAPACITY: With 3mm thick bracket, each U groove gate wheel can bear 300kg load, easy to bear for heavy gates, sliding smoothly and stably ROLLER BEARING: Double ball bearings make the sliding stable and smooth, easy to slide the gate PERFECT FOR: Entrance gate, factory gate, sliding fence, dog gate, return track, industrial machine, rolling gate, container rack ...