Tool is a bit difficult to use on my Invicta watch band. My watch band is wide making it difficult to line up the tool's pin with the pin in the watch band link.  Also, the pins in my watch band are tight causing the lightweight plastic that is the tool to flex quite a bit. I was able to eventually remove/replace the links but, it took a while.

The tool was a bit easier to use on a narrower (Seiko) watch band. The pins were easier to remove and the fix went much more quickly.

I wouldn't, again, buy this tool.  I think the risk of doing damage to the watch is not worth the cheap price of the tool.  Although, admittedly, I did not damage my watches.

If I had to buy it all over, I think I would consider a metal tool and look for a feature that makes it easier to line up the pins.