Zipperstop Wholesale YKK&reg; 4 1/2" Nylon Coil Zipper YKK #3 Skirt & Dress Zippers Closed End 580 Black (12 Zippers) Zipperstop Wholesale YKK 4 1/2" Nylon Coil YKK #3 Skirt & Dress Zippers Nylon Coil Closed End 820 Atom Red (12 Zippers) Strong yet lightweight zipper for slacks, skirts and dresses. Length- 6" Actual zipper length- 4 1/2".