| Brand | Drillco |
| Product SKU | 1312A139 |
| Category | Drills |
| Size | Fractional |
| Material | High Speed Steel |
| Finish/Coating | Black Oxide |
| Pack Quantity | 1 |
| Size | 39/64 |
| Overall Length | 12 |
| Flute Length | 9 |
| Description | Because of the inaccessibility or the extreme depth of a hole it is found that even long series drills are not long enough.˜ The drilling of such holes generally requires the use of an Extra Length Drill.˜ The drills are made with a general purpose flute design which will perform satisfactorily under the widest range of operating conditions and materials. |