Premium Quality 8 5/8 Inch IADC637 Drilling TCI Bits

=== Base Info ===

• Model NO.：8 5,8 Inch
• API Reg Pin：4 1,2"
• Bearing：Journal Bearing
• IADC：637
• Nozzle Number：3
• Application Field：Thermal Well
• Trademark：superior
• Transport Package：Wooden Case
• Specification：Tungsten Carbide
• Origin：China
• HS Code：8207191

=== Description ===