| Cat. No. | Frequency (Hz) | Type (Alow Steel) |
| SP220 | 256 | Plain Shank |
| SP221 | 288 | Plain Shank |
| SP222 | 320 | Plain Shank |
| SP223 | 341.3 | Plain Shank |
| SP224 | 384 | Plain Shank |
| SP225 | 426.6 | Plain Shank |
| SP226 | 440 | Plain Shank |
| SP227 | 480 | Plain Shank |
| SP228 | 512 | Threaded Shank |
| SP230 | 256 | Threaded Shank |
| SP231 | 288 | Threaded Shank |
| SP320 | 256 | Threaded Shank |
| SP341.3 | 256 | Threaded Shank |
| SP234 | 384 | Threaded Shank |
| SP235 | 426.6 | Threaded Shank |
| SP236 | 440 | Threaded Shank |
| SP237 | 480 | Threaded Shank |
| SP238 | 512 | Threaded Shank |