These are so much easier than trying to clamp down a straight edge or board. Having two at different lengths is great. One way to improve it would be to have the vice parts adjust on an angle for making an angled cut.

Used for a couple of years and works great.

Me encantó la guía para sierra, muy buena calidad y funciona perfecto

Hay que tener cuidado con trabarla bien. Pero funciona de maravilla

It does work well and it is a lot less expensive than a track saw. I was able to make 1/4'' cuts with a circular saw. It does take a little getting used to and the set up takes some time. The set back markers are real stiff to move and that's good because they shouldn't move when you are setting up the cut. However that is frustrating. Getting it to grip on the material was the most difficult part. But the good part and the reason I got it is it will support a Circular saw a jig saw and a router and it sets up faster than a straight edge and and clamps. So far I am happy with it