No instructions included. I can't even find anything online. I'm taking it back and I'm going to Radio Shack. There are some good youtube videos for their stuff.

OK, so the blade did not become dull. I just slipped a little. The tool comes with an Hex key (attached to the bottom) and the blue blade casing slides out for adjustment. I do not need to purchase another cable stripper, this one works great now that I know how to use it (instructions would be nice). I found a post on another website about the Hex key, guess I'm not the only one. Your Smarthome customer is not necessarily a professional cable installer or any type of professional installer for that matter. We are weekend warriors, we take on these projects because they are a challenge, they are fun, they impress our wives, and most of all, we get to buy cool new tools. So if you are a vendor and sell to Smarthome customers, please include instructions in your packaging for everything that comes with the kit. That's my 2 cents. I bought the SealTite Pro A/V Kit, I love it.