... 437, 517, 537, 617, 637,737,827 TypeTri-cone bits, Steel tooth bits, PDC bits Applicablewater well, oil field, construction, geothermal, directional boring ... water well drill bits,oil well drilling bits ,like: Tricone Bits (Steel tooth & TCI bit),Tri-cone Bit,Three cone bit,Tricone Drill ... inserted tricone bit),both of which are used for mining pilling, water well drilling or oil well drilling2,Model ...