... 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 Bit -TCI Tricone Bit ... in outer row.0.50~1.10200~40THJ737G737Hard formation with high abrasiveness,such as hard limestone,dolomite,hard sandstone and chert,etc.Large radius conical ...