【Final】 This is a holder for quickly and easily changing 4x5 film. It's out of production and valuable. I doubt you'll find another one in this pristine, like-new condition. (I don't actually remember using it for shooting, so I think it's practically new.) It's thin, lightweight, and compact, making it exceptionally mobile for outdoor shooting and ideal for long location shoots. Made of durable resin, it can withstand heavy use. Comes with a soft case. It features excellent operability, including a locking mechanism to securely attach to the camera body, an automatic reset release knob mechanism, and a double-exposure prevention function using a shot-taken stamp button. (※Since it's an unused item stored for a long time, I'm not sure if the stamp ink will still work.) It requires special film, such as Quickload film, for use. I believe Kodak Readyload film was also compatible. Unused, stored item. That's all. Thank you.