... minimum. 4.Product ApplicationIt is suitable for mining applications. 5.Current Main Availability Diameter/InchIADC CODE3 1/2 211, ... 241, 537….……….. ………………………………12 1/2 211, 121, 241, 537….14 3/4 131, 211, 537, 517….15 1/2 211 ... , 121, 241, 537….17 1/2 131, 211, 537, 517….18 1/2 211 ... 241, 537….………..………………………………26 131, 211, 537, 517…. API standard 17.5'' sealed steel tooth tricone bit