I have a Horseman Roll film holder that will fit a 4x5 graflock back and can be used for 120 or 220 (have two different inserts) and will give 6x9 negatives. I would like to trade this for a Wista roll film holder that will fit my Wista roll film slider. If I can't find one of the Wista holders I would be then willing to sell this holder, but would like to try trading first. I will be putting up pictures as soon as my digital camera arrives.