I have a Graflex 6x9 roll film holder in good user condition. It has the lever film advance instead of the wheel and the holder has the needle rollers that are reputed to keep the film flatter. It has worked well for me, but I recently got a medium format slider for my Wista VX and will use the slider for all medium format in the future, so this is excess to my needs. It will fit on any camera with a Graflock or International back. I would like to get $100 plus shipping for this very handy attachment.