I purchased this for my jointer, but after setting all the pieces together on my bench, I realized the smallest width it could be was 16". My jointer measures 12". I had to put a plywood base into the finished framework to set the jointer on. I have the HTC mobil base and for now on thats what I will purchace. As with the other reviewers, It's sloppy with the 1 1/2" boards. The back roller run on the outside edges because of the slop. They tell you to drill 7/16" holes and that is way to big. For those of you that don't have a drill press, you need to mark both sides of the boards and drill from both sides. This will give you a more accurate hole. I am verry dissapointed with this mobil base.