คำอธิบาย
| Model | Tube X Tube (PT) | Model | Tube X Tube (PT) |
| 138×2 | 1/8″ | 138×6 | 1/2″ |
| 138×3 | 3/16″ | 138×8 | 5/8″ |
| 138×4 | 1/4″ | 138×12 | 3/4″ |
| 138×5 | 5/16″ | 138×16 | 1″ |
| 138×6 | 3/8″ |
| Model | Tube X Tube (PT) | Model | Tube X Tube (PT) |
| 138×2 | 1/8″ | 138×6 | 1/2″ |
| 138×3 | 3/16″ | 138×8 | 5/8″ |
| 138×4 | 1/4″ | 138×12 | 3/4″ |
| 138×5 | 5/16″ | 138×16 | 1″ |
| 138×6 | 3/8″ |