6 1/4" (158.8 mm)
BIT
FORMATION
5138J
Soft to
Medium
5168J
Soft to
Medium
5262
Soft to
Medium
5292
Soft to
Medium
6199J
Soft to
Medium
6303
Soft to
Medium Hard
6303AJ
Soft to
Medium Hard
HB628
Soft to
Medium
HB628J
Soft to
Medium