... distributed in the depth of impregnated bit's matrix series. The matrix layer of the ZM contains a ... a result of this action. C6,C9,C12 series.Our impregnated bits are manufactured to give optimum penetration ... : AQ, BQ, NQ, HQ, PQ/AQTK, BQTK, BQ3, NQ2, NQ3, NQTT, HQ3, HQTT, PQ3, PQTT T2 series: T2 46 ... AWT, BWT, NWT, HWT (Single Tube/Double Tube)WG Series:EWG, AWG, BWG, NWG, HWG (Single Tube/Double Tube ...