Solid carbide spiral bits,solid carbide two flute spiral finishing tool/ with chipbreaber,etc. V type Adjustable Spiral Bit1.Suitable for hard wood,soft wood,plastic wood,metal,stone,etc.2.Suitable for installing on the CNC machine,multiple spindle machine,hinge boring bit machine.3.Specification: Drilling dia:30mm/43mm Shank dia:10mm Overall length:57mm4.Great wear resistance and impact ...