RC enthusiasts, listen up! Want more precision and durability for your Arrma 1/10 scale truck? This combo pack includes a tough 25-tooth metal servo horn and a matching 5.0mm aluminum hex hub. The servo horn is CNC-machined from high-strength aluminum alloy, so it won't bend or break under load like plastic ones can. It has four adjustment holes (21mm, 29mm, 37mm, and 45mm from center) so you can fine-tune your steering throw and find the perfect balance of speed and torque. The 5.0mm aluminum hub adapter is built to handle high-torque applications and aggressive bashing. It's corrosion-resistant and keeps its color. This set fits the Arrma 1/10 Granite 4X4, Big Rock 4X4, and Senton 4X4 models. The package comes with the black servo horn (plus 3 screws) and the aluminum hub (with 8 screws). It's a straightforward upgrade that adds reliability and performance to your RC vehicle.