I usually use a combination wrench but there is work to turn 3, 4 size nut (glasses are not possible) I studied purchasing both mouth wrench. I found bamboo famous for the monkey wrench where I was looking for cheap and good products. I ordered it because the finish on the photo looked good. The impression that you touched is the finish of the surface like Facom. I think that it is slippery if it is slightly smooth and oiled with ~ but thinness is a little thinner and is a good feeling.