For those who want to make really wide and thick "Art-batts", the "Mad Batt'r double wide" model 302x2-BA is available. This model has drums twice as wide as the regular Mad Batt'r.
Other than size, this doublewide drum carder has the identical features and benefits as the singlewide version. It comes complete with the same accessories as the singlewide including the Brush Attachment.
It is also available as a motorized model. If you choose the manual model, it can later be upgraded to a motorized carder.