1. Application: Aluminum windows 2. Material: Zinc alloy frame with nylon wheels 3. Finsih: Powder coating 4. Color:Any color 1)Application scope: This type of window roller can be matched with aluminum casement windows and doors.2)Material: Aluminum alloy, Zinc alloy, nylon.3) Package: The package is made according to the quantity of the products or the requirements of our clients.4) Types: ...