Foundation drilling tools,Rotary Drilling bits,Trenching bits,Tunneling tools,Rock drilling ,auger bits,auger drilling bit FOBWe can offer construction conical bits for foundation drilling, rotary drilling, trenching, tunneling, mining etc ... Parts No. as BFZ80, BFZ70,Bucket teeth T25series and holder,T18 series and holder,Holders parts No. as C30, B43H, BHR73 etc ...