Step one:

First select a 9px hard brush then set the shape dynamics to this settings.

Step two:

In a new layer, draw a #5C6165 straight line. The settings you entered through shape dynamics renders your line to fade.

Step three:

Now add a Satin, and Pattern Overlay layer styles.

Step four:

Now were going create another set of zipper, first turn off shape dynamics. Set your brush to 13px hard brush. Draw a #5C6165 straight line and add the same layer styles as step three.