... and toughness carbide gear optimized design of the tooth row 17 1/2" tricone button bit 12 tci bits iadc 343.Cutting ... , 537, 617, 637 6 1/2165.16177 1/2190.5517, 5378 1/2215.9437, 517, 537,617,6379 1/2241.3437, 517,537,617 ... ,13 3/4,14 3/4,14 5/8,16,17 1/2,20,22,23 ,24,265.Basic Information Product/Service ... bit,used drill pipe Number of Employees:50-100 People 17 1/2" tricone button bit