Bone drill is a medical device used in orthopedic surgery, mainly for
 drilling, cutting or sampling on bones. Often made of materials such as
 stainless steel or tungsten steel, it has strong hardness and corrosion
 resistance.
The diameter of the handle of this bone drill is 2.35mm,
 which can be used for common cranial drills in the market. The diameter
 of the drill bit comes in various specifications such as 3.0mm-10.0mm, 
which can meet different need
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