This Paterson Multi Reel Developing Tank 3 will take up to three 35mm films or two 120/220 films. This tank is fast to fill and easy to clean. Please note the Multi Reel Tanks do not come with reels so you can build your own system up. The reels are then slid onto the appropriate centre column supplied and designed to grip the column and any number from one reel up to the tank maximum can be used. Take care when inverse agitation is used with less than afull load of film and chemistry.