High Quality API-7-1 tricone drill bit for well drilling

Advantage:
1 TCI tricone bit, steel teeth tricone bit,rock bit,milled tooth bit,tci bit,steel tooth bit
2 Certified by ISO9001&API
3 Wide size code
4 Best price
5 Delivery on time
6 High quality and competitive price
7 rubber seal or metal seal
8 including drill rods,drill collar,rerun steel tooth bits, ,used drill bits stock,used mud pumps,etc
9 be used for water well, oil field, underground, construction, geothermal, directional boring
High Quality API-7-1 tricone drill bit for well drilling