... carbide gear optimized design of the tooth row 17 1/2" tricone button bit 12 tci bits iadc 343. ... 537, 617, 637 6 1/2165.16177 1/2190.5517, 5378 1/2215.9437, 517, 537,617,6379 1/2241.3437, 517,537 ... 8,4 1/2,4 5/8,5 1/2,6 ,6 1/2,6 3/4,7 7/8,8 1/2,8 3/4,9 1/2,9 5 ... /8,9 7/8,10 5/8,12 1 ... 4,14 3/4,14 5/8,16,17 1/2,20,22,23 ,24,265.Basic Information Product/Service ...