I wasn't able to use this tool for the entire job of adjusting my current metal watch band because the link locking mechanism is different, but once I took it apart and tightened the components, I was able to use it for releasing the snap mechanism so the band would lie flat. I was also able to use the groove at the non-handle end to hold the band while I made the necessary adjustments to remove extra links.

The band I bought this for does not use pins to attach the links to one another, but rather a latch that you need to slide in the direction of an arrow stamped on each link, and this latch is moved by poking a pointed tool into a hole on the back of the link. The latch was hard to slide, so the groove in the non-handle end of the tool came in handy for holding the links in place while I slid the latch open or closed.

As it arrived, the tool was too loosely constructed to be used, but once I took it apart and tightened the pin remover it worked well enough to remove the pin attaching the band to the snap. For the money, it does the job, but if I were going to adjust a lot of bands I would opt for a higher quality tool.