Features 1.Size:3 3/4" (95.3mm)~26" (660.4mm) 2.Cover all all iadc code 3.Reliable quality and best price 4.Tungsten carbide insert tricone bit 5.Certified by iso, api Advantages 1.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 and shearing the role of broken rock. 6. Cone bit to adapt to the soft, medium and hard of various strata. More advantages 1.Suitable for medium to medium hard formation of high crushing resistance (hard shale, sands, etc.) 2.Bit bearing is non-sealed roller bearing. 3.Hardfacing is applied on the shirttail, and carbide inserts for gage protection are pressed into the head od. 4.Cone gage surface is reinforce with carbide compacts. Wooden cases or as your order