Permanently find on stock the whole of the trapezoidal screws:

- Of Ø 10 with the step of 3, Ø 70 with the step of 10
out of steel and stainless, not on the right and on the left.
- Nuts steel, bronzes, cylindrical, with flange,
hexagonal, and square.

As well as the supports of ends:

- Fixed and free standard Stages,
- Stages brackets fixed and free.