Those rake shims are meant to be placed in your board deep tuttle box.
Developed with IQ FOIL competitors, this 10 shims set allows you to adjust your foil rake as precisely as possible (the angle between the hull of the board and the mast-fuselage assembly).
The shims range from +0.5mm to + 5mm and reflect an theorical additionnal angle of +0.2° to +2.0° (+ or - 0.1°).
Comes with custom storage box.
3D printed, the shims are very stiff & resistant to compression.
Possibility to order in addition 2 INOX 316 washers of 6mm (rear) and 4mm (front) made for the IQ foil boards but also Cobra box. These washers are much thicker & stiffer than those you can already find.