I have owned the other Aluminum Taper Jig with the Screw On stop, and I recently purchased the Rockler Fiberboard Jig which went in the trash can. Bear in mind I use these for production work, and I make my living as a professional cabinet builder, and although some people are not happy with this one, I LOVE it. If you need to do tapered box fronts as I do, this unit is perfect. The removable and adjustable stop is the best part of this unit. All taper jigs are a pain to adjust, but with a little patience and time, it can be done just right, and this tool does the job. I was considering modifying my first aluminum one to make the stop easily adjustable, and easier to swap to the other side. This one does all of that. For the money, I find this one the best one so far, and if it gets lost, I'm buying another one. Whoever came up with the adjustable and easyily removable stop, my hats off to you! VERY NICE JIG!! Take your time when setting up your tools, the payoff is a finer end product.