OMG! This is probably the best tool I have ever bought and I have almost every cordless Dewalt tool ever made! Seriously, if you're installing anything other than a single threaded knob, buy this tool! He didn't have any instructions, but if you have a little common sense you'll figure it out. That's easy! My only problem is that I have several drawers that are more than twice the length of the ruler. You need a little more thought to get it right the first time. I haven't seen a fixture for this in too long, but if anyone knows of one. Great tool! Definitely recommend buying aluminum.