Description Overview 6” plastic extruder, 20:1 ratio Make: Royle Gearbox model: 3A Specifications Barrel diameter: 6”, barrel L/D ratio: 20:1 Heating zones: 4, heating/cooling: electric heat/air cooled Heater construction: cast aluminum Extrusion screw: included Head clamp: included Drive and Controls Motor: included Drive: Eurotherm Temperature controllers: Eurotherm PLC: Allen-Bradley Condition As is