API 6 1/2'' 5 Blades Matrix Body PDC Drill Bit for Well Drilling

Model Name :：GM1305

API 6 1/2" Matrix Body PDC Bit Rock Bit for Well Drilling

Model Name :：6 1/2" M223

API 6 1/2" IADC223 New Matrix body PDC Bit Factory Selling Directly

Model Name :：6 1/2"M223

API 12 1/4" Matrix Body 7 Blades PDC Drill Bit for Well Drilling

Model Name :：12 1/4" M423