... bit (mill tooth tricone bit) and tricone bit(tungsten carbide inserted tricone bit),both of which are used for mining pilling, water well drilling ... very hard formation .We have different and suitable types12,Button bit: small tooth, big tooth,conical inserts,chisel inserts13,Packing: ... supplier of new and used (rebuilt) drill bits used for oil filed,waterwell. Including tricone bits, PDC bits and ...