YKK Highest Quality Zipper EXCELLA Excella 3SGYI Antique Brass Open OP 40cm DA2E Color: 219 (Brown) 5 pieces YKK's premium zipper "EXCELLA" Unlike other metal zippers, EXCELLA carefully polishes each small part called an element. This polishing process minimizes the unevenness of the entire zipper, resulting in a smooth, sleek feel when touched and a slider that glides smoothly. 14