... tools.1.Integral drill steels(Integral Drill Rods)Shank H22x108mm, H19x108mm,standard hex, Bit diameters include ... tools(Tapered Drill Steel)Including:Drill rods with Shank H22x108mm,(6,7,11,12 degree taper) taper ... most lengths.button bits, cross type bits and chisel bits with(6,7,11,12 degree taper). ... R22,R25,R28,R32,R38,T38,T45,T51)Shank adapters-carburized and manufactured with tight tolerances and ...