... for business talks.About products1. Integral drill steels (Integral Drill Rods)Shank H22x108mm, H19x108mm, standard hex. Bit diameters include 20- ... H22x 108mm, (6, 7, 11, 12 degree taper) taper rods in most lengths.A comprehensive range of button bits, cross ... and Retrac body.Tungsten carbide (Buttons): Spherical, Ballistic and Conical. (Threaded R32, R38, T38, T45, T51 ; bit diameter: 45mm-127mm); ...