Zipperstop Wholesale YKK&reg; SALE 20" Zipper YKK Color 501 White #3 Skirt & Dress (12 Zippers / Pack) Zipperstop Wholesale YKK 12 zippers YKK Color 501 White 20" YKK #3 Skirt & Dress Strong yet lightweight zipper for slacks, skirts and dresses. These are nylon zippers with plastic teeth and a metal slider. Overall length is 21.5" (54 cm), actual zipper part measures 20" (50 cm)