... .Product ApplicationIt is suitable for mining applications. 5.Current Main Availability Diameter/InchIADC CODE3 1/2 211, 121, 241 ... 537….4 3/4 131, 211, 537, 517….5 1/2 131, 211, 537, 517….6 211, 121, 241, ... , 537, 517….15 1/2 211, 121, 241, 537….17 1/2 131, 211, 537, 517….18 1/2 211, 121, 241 ... , 537….………..………………………………26 131, 211, 537, 517…. API standard 12 1/4''steel tooth tricone bi for ...