The barrel measures 13.5cm diameter and can hold up to 4kg of clay - perfect for larger section extrusions. The Plastic die plates have 12 round holes from 6mm up to 28mm diameter, then rectangles 19x6mm, 25x6mm, 50x6mm, 75x6mm, 12.5mm square & 12.5mm Hexagon shape. Six dies are included.