ZipperStop Wholesale Authorized Distributor YKK&reg; 21" Medium Weight Jacket Zipper YKK #5 Brass ~ Separating ~ S559 Sassy Pink (1 Zipper/pack) ZipperStop Wholesale Authorized Distributor YKK 21" Medium Weight Jacket Zipper YKK #5 Brass Separating ~ S559 Sassy Pink (1 Zipper/pack) YKK brass separating zippers are made from the highest quality metal. Brass teeth and Brass Auto-Lock slider. Highest quality zipper for a medium weight jacket or coat.