Rock Reamer from 16" to 42"

6'' 81/2'' 9 1/2'' 12 1/4'' Matrix Body PDC Drill Bit , Diamond Oil Drill Bit

8.5 inches IADC 637G tricone drill bit,tricone rock roller bits

9.5" IADC321 steel tooth tricone bit

Roller Cone Bit-8 1/2'' IADC617

12 1/4'' IADC 537G tricone bit