The Jobo 2800 Series Print Drums are designed to allow you to be able to process prints in daylight, regardless whether or not you're using a Jobo processor (by using them with the Roller Base).
Also, like Jobo film tanks, these drums are modular, which saves you money by being versatile.
The 2840 Print Drum holds up to 8-4x5", 4-5x7", 2-8x10", or 1-11x14" prints, and requires a minimum of 120ml of solution.