ReedHycalog SL51H 6 1/8″ TCI Tricone Drill Bit – IADC 517 – Sealed Bearing
ReedHycalog SL51H 6 1/8″ (6.125″) tricone drill bit. Great for oil & gas, water well, geothermal, HDD, or exploration drilling applications. Model: SL51H. Serial / Trace: TN8473 (and other production codes visible in photos).