The open end (separating) block tooth zipper is mostly used in jackets, do you cycle or go by car and is the zipper long? Try a two way zipper...

Block tooth means that the zip has separate squarish looking teeth, it looks coarser than a spiral tooth zip and is more common in sportive wear and outdoor clothing.

The teeth and the open end part is made from plastic, the slider is made from metal and is painted the same colour as the tape and teeth.
Brand: Optilon

Want to shorten your zip yourself?

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