Carbide tipped good performance in chip removal and friction resistance weldon shank/ ... .05mm 3/4" D.O.C 30,50,75,100mm Carbide tippedD.O.C 30,50,75,100mmweldon shank/one-touch ... types of vertical drilling machine, radial drilling machine, milling machine, lathe, etc. TCT Annular Cutter