IADC635-251 9 7/8 Inch Tricone Drill Bit For Mining ...
IADC635-251 9 7/8 Inch TCI Tricone Rock Roller Drill Bit for Mining . The TCI Tricone bits drilling for medium to hard rock formation.The medium formation TCI tricone bits features aggressive chisel tungsten carbide inserts on the heel rows and inner rows.
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