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

6-3/4″ New Steel Tooth Bit with 3-1/2 API Regular Pin (IADC Code: 211)

4-1/8″ New Steel Tooth Webbed Bit with 2-3/8 API Regular Pin (IADC Code: 321)