114-117 Soft Formation Tooth Bits The 114-117 bits are used to drill low-compressive strength,soft formations.Long projection tooth lengths are used on high offset cone to provide the greatest penetration rates possible.Wear-resistant hard facing is used to control tooth wear,On the softest bit types this hard facing completely covers the bit teeth. 127 Medium-Hard Formation Tooth Bits The 127 bits are used to drill high-compressive strength,medium hard formations.Short projection teeth with reduced crest length are used in this series of bit designs.Durable hard facing is applied to reduce tooth wear. Sunny drillbits2 at zkdrilling dot com MSN:triconebit1 at hotmail dot com SKype:triconebit