Dental Curette, Gracey, Rigid, Autoclavable Silicone Handle, GR 1-2Dental Curette, Gracey, Rigid, Silicone Handle, GR 1 2 Dental Curette, Gracey, Rigid, Ergonomic and Autoclavable Silicone Handle Instrument, GR 1 2. For Anterior. American Type. The Rigid Curette has a stronger and less flexible shank than the standard one. It can be used effectively for heavy calculus removal without using additional scalers. Product Code: sCRGR1 2 or GR 1 2