The truly ulimate tool for extrusion of metal clay. It features stainless steel construction so you do not have to worry anymore about scratched aluminum contamination. This tool is easy to use and extremely durable and flexible. It has optional discs available for use expansion. It unique crank shaft allows for nearly effort free clat extrusion. It is not recommended to share tools between different base metal clays. This extruder comes with 10 discs of various sizes and shapes.