1.for special medical-purpose materials 2.SI3N4 ceramic balls or stainless steel balls 3.Vacum poly bag and plastic tube pack Note & Explanation: pictures Dental bearing All parts are produced from special medical-purpose materials on high-precision machines,the qulaity of our prodcuts fulfils the hgihest standards requested in this fiedl , Dental bearing Balls : Si3N4 Ceramic balls or stainless ...
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