11 5/8" Milled Tooth Tricone Bit for Oil Drilling with Improved Metal-Sealed Bearing

=== Base Info ===

• Model NO.：11 5,8 FJ-217G
• Type：Production Drill
• Usage：Well Drilling
• Certification：API
• Trademark：Superior
• Transport Package：Carton or Wooden Box
• Origin：China
• HS Code：8431432000

=== Description ===