Superior Tricone Bit Roller Bit for Oil Well Drilling Metal-Sealed Bearing Drill Head

=== Base Info ===

• Model NO.：12 1,4 FJ-127G
• Type：Production Drill
• Usage：Well Drilling
• Certification：API
• Trademark：Superior
• Transport Package：Carton or Wooden Box
• Origin：China
• HS Code：8431432000

=== Description ===