After reading some of the other reviews, I was a little hesitant to order this tool.  However, at less than $5, I figured it was worth the gamble.  It took me some time to get my watch sized properly, but once I got used to the nuances of this tool, it wasn't difficult.  I broke the first pin I used because I didn't line things up properly.  I was more vigilant after that and had no problems.

Yes it's a cheap tool, but used properly, it gets the job done.