These NiTi rotary instruments are designed to efficiently prepare the coronal portion of the canal and can be used in place of a Gates Glidden drill. A noncutting tip opens the coronal area with more control than the Gates Glidden drill?s bur-shaped tip, and because they operate at a very slow speed of 300 RPM, you are assured of safe handling. The result is a continuous tapering preparation with proper coronal flaring for improved straight-line access to the apical portion of the canal, using fewer instruments. The U®-file radial-landed flute design keeps the instrument centered in the canal and minimizes the risk of ledging, transporting or perforating the canal.