Easy to install, just hook it on. Sold as a set of 2. Size: Width 1.1cm, Height 2.7cm We have a large number of zippers for sale. Discounts are available for bulk purchases, so please consider. a-13 ※It may be difficult to adjust the lighting during photography, and the color of the actual product may differ from the photos depending on the viewing environment and monitor resolution. There may be minor scratches or imperfections from the manufacturing process. Please be aware of this beforehand.