Extremely useful Graflex Graphic board to monorail adapter for B&J, Kodak, Calumet, and Graflex monorail view cameras. Have a lens on a Graphic board that you want to pop on your monorail? This is the tool you need! Works perfectly; in excellent condition. $20 OBO plus $6 shipping within the continental US. I also have a Copal 0 Crown / Speed Graphic board to go with this for another $10, if you need one.