This aluminium adapter is suited for brake arms of caliper brakes (Roadbikes and touring bikes / left and right side). In most cases it is used only for rearlight because the roadbike frontadapter allows to mount the lights closer to the rim which means more powerful front light. (When the brake arm moves the light moves with the brake arm: This has a nice "extra" brake effect but also means that the distance between light and rim has to be larger to avoid rim contact).
A click adapter (with screws) for mounting the lights is enclosed.
A security adapter + tool for theft protection can be ordered optionally in our shop.