LIST OF ROCK BITS
| Sizes of Bit in Inches | Size & Style of Pin Connection |
| 2 - 7/8" to 3" | N Rod or AW |
| 3 - 3/4" to 4 - 1/2" | 2 - 3/8" REG |
| 4 - 5/8" to 5" | 2 - 7/8" REG |
| 5 - 1/8" to 7 - 3/8" | 3 - 1/2" REG |
| 7 - 1/2" to 9 - 3/8" | 4 - 1/2" REG |
| 9 - 1/2" to 14 - 3/8" | 6 - 5/8" REG |
| 14 - 1/2" to 18 - 1/2" | 6 - 5/8" REG or 7 - 5/8" REG |
| 18 - 5/8" to 24" | 7-5/8" REG or 7-5/8" REG |
