This 4x10 Chamonix H-1 format changing kit allows conversion of the H-1 to the 4x10 format. The kit includes the 4x10 back, bellows and a pouch case. It takes about five minutes to make the change in either direction. The 4x10 back is a bail back which makes inserting the film holder much simpler. These kits sell for $1340, plus shipping from Chamonix in China. This kit is used, but in nearly new condition. Asking $1025, plus $25 shipping.