1 With API and ISO9001 2 High quality and competitive price 3 Various of model and dimension available 4 Fast drilling rate Tricone bit1.High-strength, high flexibility, high temperature, high wear resistance.2. High-precision metal seal.3. Locking roller ball, to adapt to high-speed.4. The use of high strength high toughness carbide teeth,5. Hours in the rotary cone bit with the impact, crushing ...