Check the listing for details. Darkroom Compact Developing Tank With 4x5 Spiral Reel Processing Color B/W Film. Condition: New. Listed at 57.19 USD. Compact Film Developing Tank Equipped With One 4x5 Spiral Feature: Equipped with 1x 4x5 spiral. The simultaneous rotating and undulating movements of the spirals ensure that the chemical runs uniformly inside the tank, which can processing two sheets of 4x5 film in one time. Developing Tank: Unbreakable plastic tanks for developing 4x5 black and white, color films. Heat-resistant, watertight and opaque to light. Chemical solution requirements are shown on the tank bases. Package: 1x Developing Tank and 1x 4x5 Spiral. Chemical contained:With the spiral reel, it can be loaded 750ml liquid. Maintenance Instruction: Please wash the residual liquid after each working to avoid the neutralization of development and fixer liquid, so that the liquid is not potent enough, and it cant achieve its desired effect of development and fixer.