... business talks.About 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, (6, 7, 11, 12 degree taper) ... (threaded R22, R25, R28, R32, R38, T38, T45, T51)Shank adapters - carburized and manufactured with tight tolerances and controlled straightness ...