Name: 8-3/4″ New Button Bit with 4-1/2 API Regular Pin and a Sealed Journal Bearing (IADC Code: 417 or 517)
SKU: TB83/4417KC OR TB83/4517KC

4-3/4″ New Button Bit with 2-7/8 API Regular Pin (IADC Code: 522)

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