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1: You can use it for annular cutter on your milling machine and drill machine.
2: Triangle shank increase torque 40%.
3:Quick change annular cutter easily.
Dial Indicator 0-0.5",Range/Rev 0.05",Dial Reading 0-100,Grad.0.0005",Dial Face Dia.2.28",Stem Dia.3/8"
DIN345 Taper Shank Drills
HSS DOUBLE END DRILLS