12 1/4'' sealed bearing tricone bit for hard rock drillingHebei Yichuan Drilling Equipment Manufacturing Co., LtdChina
API three cone rock bit/drill bit tricone with 8 3/4"Hebei Yichuan Drilling Equipment Manufacturing Co., LtdChina
4 1/2 Inch (114Mm) IADC537 TCI Tricone Drill BitHebei Yichuan Drilling Equipment Manufacturing Co., LtdChina
NEW4 1/2 Inch (114Mm) IADC537 TCI Tricone Drill BitHebei Yichuan Drilling Equipment Manufacturing Co., LtdChina
NEWCore Drill Bit Diamond Drill Bits For Drilling StoneXiamen Qicheng Superhard Material Co., Ltd.China
China
