Self locking system for wings. Suited for fuselage widths between 60mm/2.36in. and 110mm/4.33in. Holding power may be adjusted by using different spring washers. The screw nuts need to be glued into the wing. The couplings will be screwed in and adjusted to fuselage width.
The Allen head screws will be glued into the root rib. O-rings avoids the unintentional release of the screws. No additional tools needed to comfortably tighten the star screws.
Pictures show examples for installation