Square section aluminium truss twist-resistant version with 40 cm long sides.
- Chords A: extruded tube Ø 50 x 2 mm EN AW 6082 T6
- Diagonals B: extruded tube Ø 20 x 2 mm EN AW 6082 T6
- Ends C: aluminium casting plate EN AC 42200 T6
- Connection systems QXFC: quick-fit kit; QXSM10: bolt connection kit
It replaces the old truss QX40S. It achieves better resistance thanks to the introduction of diagonals on all the faces.