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.Most suitable for delicate processing work, utilizing a no lube air turbine handpiece. High speed no lube air turbine handpiece is used for delicate processing applications. Handpiece, air line kit, foot control and handpiece holder are included. Hook to your air compressor. Great for minute precision in small parts, ceramics, circuit boards, gourds and eggs. All dental engraving machine for sale we sell comes with 12-month warranty and fast free shipping to worldwide. Also if you have any problem in choosing or using the product, please feel free to contact us and we'll make every effort to solve the problem with you and make you 100% satisfied.