Image not available 171mm Cost-Effective Forged Tungsten Carbide PDC Drill Bit, High-Efficiency Low-Cost Drilling Equipment HEJIAN YINRUH DRILL BIT MANUFACTURE CO., LTD. www.yhrockdrill.com
Image not available 120mm Concave Coreless Pdc Bit With 3 Blades HEJIAN YINRUH DRILL BIT MANUFACTURE CO., LTD. www.yhrockdrill.com
Image not available 120mm Concave Coreless Pdc Bit With 4 Blades HEJIAN YINRUH DRILL BIT MANUFACTURE CO., LTD. www.yhrockdrill.com
Image not available 8 Inch 203mm Pdc Cutter Drag Bit With 5blades HEJIAN YINRUH DRILL BIT MANUFACTURE CO., LTD. www.yhrockdrill.com
Image not available 8 1/2 Inch 216mm Concave Coreless Pdc Bit With 5blades HEJIAN YINRUH DRILL BIT MANUFACTURE CO., LTD. www.yhrockdrill.com
Image not available 6 Inch 152mm Pdc Cutter Drag Bit With 5 Blades HEJIAN YINRUH DRILL BIT MANUFACTURE CO., LTD. www.yhrockdrill.com
Image not available Hard Alloy Drag Bit from3 1/2”to 26 or 76mm-311mm HEJIAN YINRUH DRILL BIT MANUFACTURE CO., LTD. www.yhrockdrill.com
