Trenchless Application, HDD Hole Openers , HDD Reamer , IADC 537 , Rock Reamer 1. Features of hole opener bits Hole Openers are used to enlarge the .....
Roller Cutter Hole Openers, Trenchless Application, HDD , Reamer , TCI 1. Hole openers are designed for the enlargement of pilot holes and large hole ...