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,water well Mill tooth Tricone ROCK ... .5MM.we can make the diamater size of the rock bits as cutomers request.the diamater size show in ... execl Pls see other details: Available IADC code of rock bits Milled tooth:116,117,126,127,136,137,216 ...