This YKK zipper set is a top-quality product made in the United States. With a tape material of aluminum and a teeth material of metal - nickel, it is durable and long-lasting. The open-end functionality makes it perfect for a variety of projects, and the black color gives it a sleek look. The set includes a 30" zipper, perfect for larger items. It is ideal for use in sewing and crafting projects, and can be used for a variety of purposes. Whether you are creating a new outfit or a practical item, this YKK zipper set is sure to meet your needs.