The YKK Group is a Japanese group of manufacturing companies. They are the world's largest zipper manufacturer, also producing other fastening products, architectural products, plastic hardware and industrial machinery.
Closeup of a YKK zipper on blue jeans
A zipper, zip, fly, or zip fastener, formerly known as a clasp locker, is a commonly used device for binding together two edges of fabric or other flexible material. Used in clothing, luggage and other bags, camping gear, and many other items, zippers come in a wide range of sizes, shapes, and colors. In 1892, Whitcomb L. Judson, an American inventor from Chicago, patented the original design from which the modern device evolved.
Zippers with common teeth variations: metal teeth (top), coil teeth and plastic teeth
Examples of special zippers with different tape materials, colors and patterns.
A two-way (double-separating) zipper.
A coil zipper with its slider removed.