Multi-Format Film Developing Tank with 3 Spiral Reels – 120 / 135 / 4x5 Up to 4 Rolls Darkroom A: The twin ball ratchet

A: The twin ball ratchet system uses two small ball bearings in the reel to grip and advance the film as you rotate the reel halves

Made from durable plastic with soft rubber blade inserts

and rotate the two halves alternately to feed the film onto the reel

or 100 sheets

Once loaded into a standard 35mm cassette

Multi-Format Film Developing Tank with 3 Spiral Reels – 120 / 135 / 4x5 Up to 4 Rolls Darkroom A: The twin ball ratchetMulti Format Film Developing Tank 3 Spiral Reels A large capacity film developing tank capable of processing multiple rolls simultaneously across a wide range of film formats. One of the few tanks on the market that can develop 4 rolls of 120 film in a single run making it ideal for high volume darkroom work, film labs, and serious film photographers. Developing Capacity 135 35mm film: up to 3 rolls 120 film: up to 4 rolls 220 film: up to 2 rolls 4x5