1.Part No.3064T3810D 2.Bit Diameter: 64mm 3.Thread:T38 4.Button Bits:10 buttons 5.Button bit design: drop center, normal body. 6.Tungsten carbide (Buttons): Spherical, ballistic and conical. 7.Applications: Bench, production. We have different designs for various rock formations, and a longer service life to decrease use costs for users.