| Cello Size | Cone Diameter | Rod Length |
| 3/4 | 24mm | 41cm |
| 1/2 | 23mm | 39cm |
| 1/4-1/8 | 23mm | 36cm |
All sizes are approximate. We do not recommend using the nut at the “inside end” of the rod, as these tend to rattle and/or fall off, and are difficult to access once installed.