Threaded Button Drill Bits T38, T45, T51, for Rock Drilling

=== Base Info ===

• Model NO.：41-127mm
• Certification：ISO 9001:2008
• Standard：AISI
• Surface Treatment：Spray-Paint
• Manufacturing Process：Forging
• Material：Alloy Steel
• Design：Flat Face Normal,Retrac,Straightrac Body
• Material - Cabide：Tungsten Carbide Yk05
• Technology：Hot-Pressing or Welding
• Trademark：ZZROCKKING
• Transport Package：Wooden or Plastic Boxes
• Specification：41-127mm
• Origin：China

=== Description ===