The main bar is polygonally-shaped for greater structural strength and CNC machined from a solid block to give profiles of different thicknesses. The horizontal extension in grade 4 titanium, with a box structure and crossed axis for strength. To prevent oxidation and contamination of the material, the stem is welded in an inert-gas atmosphere in a pressurized chamber.
The serial tells us that the stem might have been made in 94. NOS of course.
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