... Mill tooth tricone rock bit 1.Dia:3 1/2''--26'' 2.Type:Milled tooth & TCI 3.IADC:116,217,437,517,537,617 4.oil, ... insert and Milled tooth2.Available size: 85.5MM,88.9MM,98.4MM,114.3MM,117.5MM,120.6MM,130.2MM ... 155.6MM,158.7MM,171.4MM,190.5MM,193.7MM200MM,215.9MM,219.1MM,222.2MM,241.3MM,244.5MM,311. ... size show in execl Pls see other details: Available IADC code of rock bits Milled tooth:116,117,126,127 ...