DOHRE Carbide Twist Drill bit 1.Micro grain carbide 2.High speed ... tool accessories such as face milling cutter, carbide twist drill bits, carbide inserts(milling/turning), milling cutters, ... , D550, D580, and D600, D650, D650G. These drill bit grades will meet your processing needs. 2.There are different ... I will quote the best prices to you soon. Drill bit SpecificationsDia(mm) OAL(mm)Cut Length(mm) 0. ...