Mining 12 1/4" Spherical TCI Tricone Bits for Pilot Hole Drilling

=== Base Info ===

• Model NO.：12 1,4 IADC 637
• Color：Golden or as You Wish
• Jet Nozzle Counts：3
• Applicable Formation：Hard Rocks, Such as Limestone, Dolomite, Marble
• IADC Code：637
• Guage Protection：Multiple Guages
• API Reg Pin：6 5,8 Inch
• Bit Size：12 1,4 Inch or 311 mm
• Bit Weight：95 Kgs to 102.2 Kgs
• Trademark：superior
• Transport Package：Wooden,Plywood Case
• Specification：12 1,4 Inch IADC637
• Origin：China
• HS Code：8207191000

=== Description ===