Extremely thin material. Lead size 0.53 mm. The thickness is not even a millimeter. Since it's so thin I'm sure it won't hold up and bend. Since the material is so thin I can say that holding a pencil against it and holding it there will be a challenge. Also, I find the description a bit misleading. You only get one square, not two. I wanted to send it back but not worth the hassle. Update: 6/12/17 For justice I came back and added 2 more stars. Looking through the description, I see that it's listed as "Made of .022" thick stainless steel." so that's an indication of how thin it is. Also got a star for being made in the USA.
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