- Endostar Gates Glidden drills are engine-driven instruments, and they are used to enlarge root canals orifice and coronal third of the canals. - These instruments represent the oldest forms of root canal instruments. Gates Glidden drills are small - flame-shaped cutting instruments used in conventional handpieces. - Slightly flexible. - Rotation speed: 450-800 rpm. - Noncutting tip. - Sterilization steam autoclave 134°C. - Recommended sterilization time is 35-40 minutes. - Size: #3. **For further product information, please contact Chat Support**