Name: 5-7/8″ New Button Bit with a 3-1/2 API Regular Pin and a Sealed Bearing (IADC Code: 515)
SKU: TB57/8515

2-15/16″ New Steel Tooth Bit with a 4 Thread N-Rod Pin (IADC Code: 321)

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