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.
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