PDC Drill Bits Steel Body Six-Blade 17 1/2″ 444mm XD6163D for Oil Gas Well Drilling Tools XD Series Features Suitable for improving the steerability ....
Steel Body Six-Blade 12 1/4″ 311mm XD 6164BD BMR PDC Oil & Gas Well Drilling Bit (Petroleum & Natural Gas Drilling Tool) XD Series Features Suitable ....