After being very happy with results from my two unicolor drums to develop 4x5 negs in (apart from one of the gaskets leaking slightly) I thought I would try roll film the same way. I am just sharing what I did that worked well. I used a regular stainless tank that hold 2 x 120 hewes reels loaded with film. Normally, this is too narrow a tank to use as it does not contact both the rubber drive wheels, or the plastic rollers. All I did was place a used 120 film spool into the main 'V' of the uniroller motor base and rested the stainless tank on the rubber rollers and the film spool. Now the motor base can turn this thing like a regular unicolor tank for continuous agitation..... Just thought I'd share.