Its made of plastic polymer (non toxic). Single Use File. Effective chemo mechanical cleaning. It saves time. Easy to use. The Finishing File provides time and cost savings, over sonic or ultrasonic instrumentation. Efficiently cleans the canal walls and extracts, the residual canal debris from the canal. The unique offset flute design of the Finishing File enables, the file to agitate sodium hypochlorite and remove remaining9, dentinal wall debris without further enlarging the canal.