It is not the sturdiest tool and you could easily break the pushout pin or even crack the chassis if you force it. I used it successfully for several watch bands with medium difficulty. You must take care that you accurately line up the pushout pin with the watch band pin before you attempt to turn the knob with any force. You can use the tool to reinstall a band pin but that's a bit tricky because there is no provision to keep the pushout pin on the band pin while turning the knob and it can slip off. But for 5 dollars I did not expect more. It does work fine if you are patient and gentle.