These CNC-machined aluminum servo arms are connected to the servo not only via a mounting screw from above but also with two hex screws on the side. These two screws clamp and secure the servo arm onto the output shaft, ensuring maximum hold even if one screw is lost. Another advantage is that it is now 100% play-free when connected to the servo, resulting in a more direct actuation and relieving the gearbox. The tooth count is laser-engraved as a number or abbreviation for easy identification later on.

Since an aluminum servo horn is also significantly stiffer than a plastic arm, all commands are executed much more directly and precisely. Additionally, it is naturally much more robust than the plastic servo arms that are typically installed by default.