Zipperstop Wholesale YKK&reg; Sale 7" Exposed Zippers YKK #10 Extra Heavy Duty, Antique Copper Finished (Special) Closed Bottom Color 580 Black (1 Pack/zipper). Zipperstop Wholesale YKK Sale 7" Exposed Zippers YKK #10 Extra Heavy Duty, Antique Copper Finished (Special) Closed Bottom Color 580 Black (1 Pack/zipper) YKK Extra Heavy Duty Antique Copper Finished is made from the finest quality metal to ensure extra strength & reliability. Visually indestructible. Color may vary on your monitor.