Standard-Type Tricone Bit Style | 3.3/4 , 4.1/8 , 4.3/4 , 5.7/8 , 6-6.1-8 , 6.1/2 , 7 , 8.1/4 , 8.1/2 , 8.3/4 , 9 , 9.1/2-9.5/8 , 9.7/8 , 12.4/4 , 13.3/8 , 13.3/4 , 14.3/4 , 15.1/2 , 16 , 17 , 18 , 17.1/2 , 20 , 20.1/2 , 24 , 26 |
Standard-Type Tricone Bit Style | 3.3/4 , 4.1/8 , 4.3/4 , 5.7/8 , 6-6.1-8 , 6.1/2 , 7 , 8.1/4 , 8.1/2 , 8.3/4 , 9 , 9.1/2-9.5/8 , 9.7/8 , 12.4/4 , 13.3/8 , 13.3/4 , 14.3/4 , 15.1/2 , 16 , 17 , 18 , 17.1/2 , 20 , 20.1/2 , 24 , 26 |