Dental lab high speed air turbine grinder operates up to 420,000 RPM. It is suitable for precision processing works such as small precision parts, ceramic, correction of printed circuit board, etc. due to its non-lube handpiece. Flexible tubing ensures reliable workability reducing fatigue to the operator's hand for long continuous use. Also it can be used for delicate processing work, utilizing a no lube air turbine handpiece. High speed no lube air turbine handpiece is used for delicate processing applications.