5 inch IADC 637 tricone b

5 inch IADC 637 tricone bit drilling for hard rock...

4 3/4 Inch IADC537 Tricone

4 3/4 Inch IADC537 Tricone Bit,API Tricone Rock Roller Drill...

6 1/2 inch IADC 517 medium

6 1/2 inch IADC 517 medium hard rock tci tricone drill bit,...

6 3/4 inch IADC537G TCI tr

6 3/4 inch IADC537G TCI tricone bit for drilling water wells...

5 5/8 inch iadc 547 tci t

5 5/8 inch iadc 547 tci tricone bit...

5 1/2 inch iadc737 tci tri

5 1/2 inch iadc737 tci tricone bit ...

8 1/2 inch IADC 517 tci t

8 1/2 inch IADC 517 tci tricone drill bit...

12 1/4 311.1mm tci tricone

12 1/4 311.1mm tci tricone roller rock bit...

6 3/4 inch tci tricone bit

6 3/4 inch tci tricone bit Roller cone Bit...

7 7/8 Inch TCI IADC 537 T

7 7/8 Inch TCI IADC 537 Tricone Bit...

7 1/2 inch 190.5mm TCI Tri

7 1/2 inch 190.5mm TCI Tricone Rotary Rock Bit...

8 1/2inch 215.9mm TCI too

8 1/2inch 215.9mm TCI tooth tricone drilling bit for rock...