... IADC codes . 2.Rapid delivery time 3.Meet with API Spec7-1 Standard tricone bit, TCI bit, drilling ... it can receive higher WOB and high reliability. 4.Hydraulic DesignSmall angled watercourse design increased the shirttail ... Current Main AvailabilitySize Bit TypeIn.mm4 1/8104.8517,527,537,617 4 1/2114.3517,527,537,6174 5 ... /8117.5517,527,537,6174 3/4120.6517, ...