I was skeptical when I bought it, but my fears turned out to be wrong. The clamp works great but only opens 1-3/4 inches. So if your bench is 2ft thick like mine, this clamp will NOT fit! I was able to install mine elsewhere so it wasn't a huge setback but still a potential problem for the uninformed buyer. I have no idea why this thing is advertised as plastic as it is clearly made out of wood from the picture and when I received it. yes, it is made of wood. Great product, especially for beginners. - I'm still using it over two years later and it's still as useful as new, even with all the nicks, nicks and nicks I put into it. , intentionally and otherwise. Good price!