Hex shaped cocking tool for Hasselblad.  One end fits the cocking coupler on Hasselblad lenses and the other fits the slotted coupler visible from the back with the film back removed and the body released so the light baffles are in the raised position. This tool can allow you to easily cock the lens shutter that has released when removed it from a camera body.  Also, you can attempt to partially cock a camera body that has jammed and attempt to remove the lens. Use of this tool has allowed the camera user to return their camera or lens to a usable condition. Caution and Extreme Care Required using this tool as you can do damage both to the body and lens internally. Remember you are using this tool on a precise instrument.