I have other Porter Cable products that work well. The quality & design of this edge guide shocked me. It could have easily had more than an additional 2" of travel with a simple design change. Or you could shorten the beam by 2" and have the same usable travel with a design change. The pins that adapt it to the router are .014" under size and the spread between the mounting holes on the router are .025" more on the base than on the pin location on the edge guide. Now when you tighten the screws to fasten the router to the edge guide, they will cant the pins so they are not clamped parallel to the holes. This is shoddy quality control. Even the screws are an obsolete size which hasn't been used much for more than 25 years. The screw size by the way is #12-24. Most think it is a 5mm, but it is not. I make the assumption they got an extremely good price on these obsolete screws. These damned screws if you can find them are over $2 per screw at a place that sells parts for this edge guide online. That doesn't even consider the cost of shipping and handling. My qualifications are: I have worked in the tool and die trade for 46 years. I have been a supervisor for more than 25 of those years. I have been involved with the design and fabrication of many things that have complexity far beyond this simple edge guide.