... products1. Integral drill steels (Integral Drill Rods)Shank H22x108mm, H19x108mm, standard hex. Bit diameters include 20-42mm.2. Tapered ... drilling tools (Tapered Drill Steel)Including:Shank H22x 108mm, ( ... , R25, R28, R32, R38, T38, T45, T51)Shank adapters - carburized and manufactured with tight tolerances and controlled straightness ...