•Used as rollers and pulleys for various occasions, including sliding doors, handrail doors and windows, industrial walkway racks, machines, etc.
•The bracket is finely crafted and more stable.
•Made of 45 #high-strength steel, high hardness, anti-rust, anti-corrosion, anti-deformation, durable,
•The tracking wheel has built-in rolling bearings, which has good sliding performance.
•Easy to open and close without too much force.