Invisible Zipper(Support Online Order. Specific Price Is Based On Contact. Minimum 10 Pieces).Exquisite quality. since the locks. Metal zinc zipper head. Use thick material. Tension is not falling off.Don't break the chain, don't break the chain. the zipper is tight and strong. On both sides.It won't blow up the chain. Widely used.Process design.the tail is high.Pull its head and it won't fall off.Don't hesitate to pull and slide.