The Big Blue Extruder features a 6 x 6 x 12 inch aluminum barrel that holds a full 25 pound pug of clay and can produce extrusions up to 4-1/2 x 4-1/2 inches, without an expansion box. With this extruder, there are no heavy bars or levers to injure head or feet, no hydraulic pumps or air compressors with their inherent hazards. Instead, it is entirely hand driven. Turning the large handle drives a compound rack-and-pinion gear box which dramatically reduces the force needed to make an extrusion. No more than thirty pounds of force at the handle is needed to make an average extrusion! The barrel and die simply lift out as a unit (no tools required) so that cleaning, changing dies and loading can be done while you sit or stand comfortably at your work bench. This extruder is wall mounted. The Wagon Wheel Handle is held in place by a quick release pin. It is removed with a pull (again, no tools) so the handle can be quickly set aside whenever it is in the way. Dies furnished with the Big Blue Extruder include: Hollow round, square and hex (all 4-1/2 inch OD with 5/16 inch walls), plus one blank die. Solid construction is worry-free and almost no maintenance is required. The barrel is heavy-wall aircraft-alloy aluminum and only UHMW, aluminum and stainless steel can contact the clay. The housing is made of powder-coated steel and stainless steel. All gears and the gearbox are solid steel which has been either powder-coated or plated. Adapter available to use for North Star 4" extruder dies. More stock dies will be made available as demand arises, including larger versions of most shapes available for 4 inch extruder. One year warranty.