1. Material:             

    Pulley:Nylon,POM,Copper,Iron with Needle or Bearing.            

    House(base):Zinc,Steel,Plastic,Aluminum,Stainless Steel.            

2. Color:Choice by the customers like            

3. Feature:            

    Easier : More user-friendly design, simple installation, easy to use and replacement.            

    Safer : Rounded Edges Provides Added Safety and Eliminates Insulation Damage            

    Stronger :The use of imported high-tech materials, pressure testing more than 50,000 times more durable.            

4. Application Scope:Aluminum or plastic sliding doors and windows            

            

If you have any question,please feel free to contact us.            

We will give you more information on the introduction of our Products.