... the highest, most demanding.2.Main features1).6 Blades and Capacious FlumeSymmetrical parabola crown profile, asymmetrical bit blades, the ... well. Including tricone bits, PDC bits and drill pipe. Good condition and reasonable pricePlease specify the following on enquiry,DiameterBit ... in soft, sticky formations such as coal, oil shale, tarsands, and shallow oil and gas. PDC bit : 56, 60, 76, 96, 113 ...