C.S. Osborne No. 147 Round Drive Punch
No. 147 Round Drive Punch – These ‘Drive’ or ‘Saddlers’ Punches are drop forged from the the finest special carbon steel, carefully hardened with a polished barrel. The hole tapers back from the cutting edge so that the punchings clear freely and require only a light blow from the mallet to cut with ease.
| Size No. | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Diameter Size (“) | 5/64 | 7/64 | 1/8 | 9/64 | 5/32 | 11/64 | 3/16 | 7/32 | 1/4 |
| Size No. | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | |
| Diameter Size (“) | 9/32 | 5/16 | 3/8 | 13/32 | 7/16 | 15/32 | 33/64 | 9/16 |