7" Zipper YKK Color 501 White #3 Skirt & Dress (50 Zippers / Pack) Measurements- Overall length is 8 1/2" Inches (21 cm), actual zipper part measures 7". 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.