This adapter is a neat, quick solution for many mounting situations that would otherwise require a complex individual production.
It consists of two parts: a shank nut and a clamping piece. The stem nut has an M6 internal thread.

The clamping piece can be moved and rotated on the shaft nut and can accommodate all lights with M5 thread (Atto®, Spot®, micro S, Rhombus S) at any angle.
Due to the degree of freedom of this attachment, the light can be perfectly aligned in the direction of travel and locked with grub screws.
The luminaire can thus be attached below the fittings, for example, see photos.

To do this, simply replace the nut on the axle of the brake or clutch lever with the shaft nut.
The clamping piece alone can, for example, also be installed together with the handlebar mirror, see photos.