Basically, a tool is anything you can use as a tool. I agree with the others, a piece of pipe is a piece of pipe, or it is a cheater bar. If it would make you feel better I have seen online stores sell fancy painted pipe with a logo and call it a torque enhancer. If you go to pretty much any hardware store you can get a 2 foot piece of black gas pipe for a couple bucks. Paint it a fancy color & keep it forever.

Here is your best bet, something like this:
http://www.harborfreight.com/cpi/cta...emnumber=37391

You won't need a piece of pipe with that, but you will likely need an adapter to go from 1/2 to 3/8. Great to have when stuff is stuck, just be careful how you pull on it or you can strip stuff out. Make sure the force stays in a rotary direction by bracing the end you aren't pulling on with your other hand.

Good luck,

Jester