YKK USA Zipperstop Wholesale 3 Skirt & Dress ~ 6 Black and 6 White (12 Zippers/Pack) ZipperStop Wholesale Authorized Distributor YKK 6" Zipper YKK #3 Skirt & Dress ~ Black and White (12 Zippers / Pack) 6 Zippers black #580 ~ 6 Zippers white #501 Strong yet lightweight zipper for slacks, skirts and dresses. These are nylon zippers with plastic teeth and a metal slider.