Zipper & Slider Structure of a Zipper Types of Zippers Metal Coil VISLON® Types of Function How to Measure Standard Sliders   Plastic parts   Hook & Loop   Data Center   FAQ / Feedback		Types of Function Closed-end (C) Open-end [Separator] (O) Two-way separator (M) Zipper with double sliders (C) Zipper with double sliders (C) arranged in head-to-head relation arranged in bottom-to-bottom relation *The letter in parenthesis indicates the product classification code.