ZipperStop Distributor YKK&reg; - 18-Inch Jacket Zipper, YKK&reg; #5 Metal Brass Separating - Medium Weight Made in USA (Aztec Tan #896) ZipperStop Wholesale Authorized Distributor YKK #5 Brass Separating Made in USA 18 Inches Metal Jacket Zipper Medium Weight YKK Zipper. Brass teeth and Brass Auto-Lock slider. YKK brass separating zippers are made from the highest quality metal.