The #5 silver metallic nylon coil separating jacket zipper is a medium-weight zipper and is an upgraded version of the traditional nylon coil zipper. The teeth measure just over 5mm wide when zipped. 

Featuring silver plated coiled teeth, this medium-weight metallic coil zipper has the appearance of a metal zipper, but the flexibility of a coil zipper. 

This zipper is right-handed when worn (slider is on the right) and fully separates at the bottom, jacket style.