| ASMUSS CODE | NB (mm, inch) |
|---|---|
| SOPT/015 | 15x½” |
| SOPT/020 | 20x¾” |
| SOPT/025 | 25x1” |
| SOPT/032 | 32x1¼” |
| SOPT/040 | 40x1½” |
| SOPT/050 | 50x2” |
We are currently not running Bob Le Hunt courses in person.
Please submit your details below and we will notify you when the courses resume.