Quality Material: The hinges are made of high quality Metal, the is smooth and smooth, sturdy and , not fade or break easily, can provide a long service life. Polishing Details: The is designed with electroplating, which is mirror-like smooth, non- and odorless, zinc alloy is not easy to oxidize, wear-, round and smooth, have excellent feel. Easy to Install: Simply push to one side and slide it through the opening and let it snap back. Zipper Replacement: These zipper tabs are reusable and detachable, great replacement for broken zippers, suitable for backpacks, travel suitcases, gym bags, coat, jacket, sportswear, bag and so on.