Tool Steel
| Grade | Shape | Size Range |
| O-1 | Starrett Flat Ground Gauge Stock | 1/64 x 1/2 - 2 x 6" |
| A-2 | Starrett Flat Ground Gauge Stock | 1/16 x 1/2 - 1 x 6" |
| O-1 | Starrett Drill Rod - Imperial | 3/32 – 1-1/4" dia. |
| O-1 | Starrett Drill Rod - Metric | 4 mm – 17 mm dia. |
| O-1 | Round Bar | 3/4 - 6" dia. |
| A-2 | Round Bar | 3/4 - 6" dia. |
| D-2 | Round Bar | 3/4 - 6" dia. |
| S-5 | Round Bar | 1 - 4" dia. |
