Doesn't it annoy you to have a new watch, but not to be able to wear it right away because it doesn't fit? You have to wait until you can get to the mall or jewelers, and then pay to have the thing sized to your wrist. Then you don't want to niggle about the fit because they always act like you're taking too much of their time with your piddly watch band.Say goodbye to those days. The Watch Sizing tool is the answer to your frustration. Just identify the links that need to be removed (try to remove the same number from each side of the watch band, usually marked with an arrow if removable). Use the removable piece to punch out the clasp pin and put the clasp and pin aside. Then lay the band into the Sizing tool. The little screw on the main body raises and lowers the base so that you can align the turning mechanism that pushes out the link pins. Get your alignment correct here ... take the extra moment to make sure you are well aligned. Then screw the large handle slowle until the pin pops out a little. From there remove the watch from the device and use a tweezer to remove the pin fully. Repeat for additional links, then replace the clasp mechanism and fine tune the fit with the pins in the clasp mechanism.The device is simple: just 2 controls that I described above. The yellow body is high impact plastic, and the actual pin pusher is stainless steel, as well as the elevator screw.Mine came free with my watch, but it is easily worth the minor cost, and will pay for itself the first time you use it. I am not a very mechanical person, and I was able to adjust my and my friend's watch bands (hers was a different make of watch) within 10 minutes, being very careful. With some practice, it can be done in less than 5 minutes.