Hey RC enthusiasts, got a Spektrum servo that needs a tough companion? This aluminum servo arm is built to take a beating. It's machined from aircraft-grade 7075-T6 aluminum – the same stuff used in planes – so it's crazy strong but still lightweight to keep your model agile. The 23-tooth spline fits Spektrum servos perfectly (and works with plenty of others too). The smart part? It has a clamping design on the spline mount that locks it onto your servo shaft, so no more worrying about it slipping mid-maneuver. It's 1/2 inch in the '1' dimension and 1.5 inches long, with multiple M3 mounting hole locations to give you flexibility for different linkages. The sleek black finish looks sharp and professional. Whether you're flying 3D aerobatics, bashing your crawler over rocks, or just want the most reliable link between your servo and control surface, this arm delivers. Ditch the plastic arms that can strip and upgrade to something that'll last. It’s a small part that makes a big difference in precision and peace of mind.