I use this product all the time to put my music in folders & binders. I have one at my main desk & I wanted a second one to have over at my computer desk. Like I said I use it all the time & when I needed it it was always at the other desk.
You'll need to put some muscle into it if you want it to punch more than a few pages at a time. Even with one piece of paper I found it wouldn't make clean punches -- I had to pull the punches out one by one. Bleah.