ZipperStop Wholesale Authorized Distributor YKK&reg; YKK Conceal ~ Invisible Assortment of Colors 16" (12 Zippers/pack) ZipperStop Wholesale Authorized Distributor YKK YKK Conceal ~ Invisible Assortment of Colors 16" (12 Zippers/pack) The assortment will include the hottest colors of the season. The Nylon Coil Teeth are hidden on the reverse side of the tape Teardrop Slider Light, dark and bright colors.