i own a few snap back watches and needed a tool to properly close the cases after changing the batteries. i saw this one and decided to give it a try. for something made in china it seems to be well built. it has pre drilled holes on its base so you can attach it to a work bench. my only criticism of this product was it came with no instructions, so i had to go on youtube to watch a video on how to properly use it. in my opinion it is fairly easy to use and a cost effective way to service your watches.