... cone, which reduces the probability of cone-dropping to minimum. 4. Product ApplicationIt is suitable for mining applications.5. Current Main ... 131, 211, 537, 517….4 1/2 211, 121, 241, 537….4 3/4 131, 211, 537, 517….5 1/2 131, 211, 537, 517 ... , 537….17 1/2 131, 211, 537, 517….18 1/2 211, 121, 241, 537….……………………………26 131, 211, 537, 517…. Smart tricone bit