This little unit makes drilling nice, straight dowels a breeze. Just mark your center on the side of the stock, line it up with the line on the jig, clamp it on, set your drill depth, and go! Doesn't get much easier than this. I'm curious to see how long the inserts last. Even if they don't last forever, I'll replace them or just get a new one. A must for your shop, if you use dowels at all.