... Life. 2. Various Sizes Available Our impregnated bits are manufactured to give optimum penetration rates and ... bit life, The impregnated diamond bits are the most commonly useful bits in the mineral exploration industry, ... as a result of this action.Our impregnated bits are manufactured to give optimum penetration rates and ... AX,NX,NXC,AXT,T6H,4 9/16,NWD4,412F,SK6L146,TT46,TB56,TS116,CHD101All Chinese ...