Tungsten Carbide Tipped Annular Drill ZhuoTuo Precision Tools (Suzhou) Co., Ltd. Base Info Model NO.:12-100mmCustomized:Non-CustomizedLength:Taper-lengthType:Core Drill BitUsage:Metal DrillingTrademark:ZTTOOLSOrigin:SuzhouHS Code:8207509000 Description Pre:Diamond Drilling Tool Core Bit for Stone Next:Power Tools Wood HSS Drills Bit 15PCS Drill Bit for Left Hand Step Drill