Rotate speed without load: =350000r/min. Clamping means of bur: Push Button. The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies.This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Handpieces & Instruments\Dental Handpieces". The seller is "llg20160223" and is located in this country: CN. This item can be shipped worldwide.