The ARL Clip, or Anti-Reversal-Latch Clip, was designed to be a simple and effective solution to a fantastically annoying problem: the ARL escaping during gearbox closing attempts. Its use is simple enough. install the ARL in the GB. Slide the clip over the ARL and around the GB, holding it in place. (please use the appropriate end to hold your size ARL axle) Close the GB with the ARL clip in place; you will be able to align the ARL and axles with their respective holes in the GB while the ARL clip is in place. Remove the ARL clip, and press the GB the rest of the way closed.