This is a good product. It is stupid easy to get put together and on the router. The nicest part isn't even a feature of the guide but the router case, it has slots for the guide arms and a hole for the head molded in. That's convenient. The only thing I wish it had was longer arms. I'd be happy with a couple more inches. Better yet, if it came with 4 pieces that could screw into one another, getting twice the length. But otherwise it's great, holds to the side of the work piece and stays true.