The R900 set comes in the PDT 5 FlipTop™ Cassette and includes three (R661, R680, R693) specifically designed Wingrove™ titanium instruments to meet all implant maintenance needs, a ceramic stone for sharpening, and UNC 12 plastic perio probe. The titanium curettes are designed for safe, effective removal of calculus under Hader bars, exposed implant threads, implant crown and bridge, as well as fixed or removable prostheses.