... talks.About products1. Integral drill steels (Integral Drill Rods)Shank H22x108mm, H19x108mm, standard hex. Bit diameters include 20 ... design: Flat face, Drop centre, Normal and Retrac body.Tungsten carbide (Buttons): Spherical, Ballistic and Conical. (Threaded R32, R38, ... , R25, R28, R32, R38, T38, T45, T51)Shank adapters - carburized and manufactured with tight tolerances and controlled straightness ...