YKK | 半自動鎖 | 閉口拉鍊 | 金屬 | #5 | 5 3/4英吋 - 14.5公分

The auto-lock slider is exactly what I needed for a backpack pocket — it stays put until you tug the tab. The metal teeth feel sturdy and the closed end makes installation straightforward.

Replaced the zipper on my work bag and the closed-end design is exactly what I needed. The pull glides up and locks in place when you let go, so the bag stays shut even when it's stuffed full.

The auto-lock slider clicks firmly into place with no play at all, and the metal teeth feel solid when zipping up a heavy canvas bag. It’s a bit stiff for the first few pulls, but that loosened up after a couple of uses.