Pixnor Green Polymer Clay Gun Extruder Sculpey Sculpting Tool with 20 Interchangeable Discs Color: Green. Material: Aluminium alloy. Size: Length: 6.5 inch 16.5 cm, Width: 3.9 inch 10 cm (at the widest part), Bottom Outer Diameter: 0.78 inch 2cm, Bottom Inner Diameter: 0.55 inch 1.4cm A miniature hand-held clay extruder. Used for many craft projects such as polymer clay, ceramic clay, pastry, bread dough, sugar paste and so on. - Come with 20 interchangeable discs for creating many different shapes.