Zipperstop Wholesale YKK 10" Zipper YKK #3 Skirt & Dress ~ Black and White (12 Zippers / Pack) 10" ykk zippers. 6 Zippers black #580 6 Zippers white #501 Strong yet lightweight zipper for slacks, skirts and dresses. Perfect for sewing pouches, purses, skirts, and dresses. They are YKK #3 nylon coil closed ended zipper. These are nylon zippers with plastic teeth and a metal slider. Color may vary on your monitor.