C.S. Osborne No 158 Oval Drive Punch
The 158 Oval Drive Punch is made from the best grade of alloy steel, carefully tempered with a polished edge. The hole tapers back from the cutting edge so that the punchings can clear freely.
| Size No. | Dimensions (Inches) |
| 1 | 1/8 by 3/32 |
| 2 | 5/32 by 7/64 |
| 3 | 3/16 by 1/8 |
| 4 | 5/32 by 1/8 |
| 5 | 7/32 by 5/32 |
| 6 | 1/4 by 5/32 |
| 7 | 9/32 by 6/32 |
| 8 | 5/16 by 7/32 |
| 9 | 11/32 by 7/32 |
| 10 | 3/8 by 1/4″ |
| 11 | 7/16 by 5/16 |
| 12 | 1/2 by 5/16 |
| 13 | 17/32 by 11/32 |
| 14 | 9/16 by 3/8 |
| 15 | 19/32 by 7/16 |
| 16 | 5/8 by 7/16 |
