These zips have metal teeth, closed end en used in pants and skirts mostly in jeans / denim fabric 
This is the courser type size 5, there are size 3's too. When closed the teeth are about 6mm wide
Most of these zips have silver coloured teeth, some have old brass teeth and the sliders match the teeth 

Want to check out the colour chart? Click the link for the colorchart YKK zips 

Want to shorten your zip yourself?

Here you will find a way to shorten a zipper: Making zips to size