Transform your darkroom experience with this professional film developing tank designed for serious photographers. This versatile tank accommodates multiple film formats including 135 (35mm), 120, 220, and 4x5 sheet film. With generous dimensions of 8.6 x 4.8 x 3.9 inches, it offers impressive processing capacity - handling up to 3 rolls of 35mm film, 4 rolls of 120 film, 2 rolls of 220 film, or 2 sheets of 4x5 film simultaneously (note: additional reel required for 4x5 processing). Constructed from durable ABS material that resists chemical reactions during development, this tank weighs 492g and provides flexible processing options. Choose between continuous agitation with minimal chemistry or intermittent agitation using a full tank of solution. The tank's thoughtful design maximizes developing capacity while maintaining a practical size, making it an essential tool for efficient film processing.