Zipperstop Wholesale YKK 16" Zipper YKK Color 501 White #3 Skirt & Dress (25 Zippers / Pack) Measurements- Overall length is 17.5" (44 cm), actual zipper part measures 16" (40 cm) 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.