chalk and eraser holder

This is something I designed because we needed it at my office. It was a fast design so there's not a lot of polish to it. I am happy with it, I didn't take any measurements but it works great. It could be tweaked a little but I don't think it needs it. as you can see in the photos it is designed to be pinned to a pin board, but nails could work if needed. Feel free to play around with the design. If you do, I just want to see what you do with it.