Name: 7-7/8″ New Button Bit with 4-1/2 API Regular Pin and a Sealed Journal Bearing (IADC Code: 417 or 517)
SKU: TB77/8417KC OR TB77/8517KC

4-1/8″ New Steel Tooth Bit with 2-3/8 API Regular Pin (IADC Code: 211)

8-3/4″ New Button Bit with 4-1/2 API Regular Pin and a Sealed Journal Bearing (IADC Code: 417 or 517)