ZipperStop Distributor YKK&reg; - Sleeping Bag Zipper YKK&reg; #5 Metal Brass Separating - Medium Weight Made in USA Color White (Length 144 Inches) ZipperStop Wholesale Authorized Distributor YKK #5 Brass Separating Made in USA Sleeping Bag Zipper Medium Weight YKK Zipper. Brass teeth and Brass Auto-Lock slider. YKK brass separating zippers are made from the highest quality metal.