Name: 8-1/2″ New Button Bit with 4-1/2 API Regular Pin and a Sealed Journal Bearing (IADC Code: 517)
SKU: TB81/2517KC

4-3/4″ New Steel Tooth Bit with 2-7/8 API Regular Pin (IADC Code: 231)

6-1/2″ New Button Bit with 3-1/2 API Regular Pin and a Sealed Journal Bearing (IADC Code: 417)