RC hobbyists, if you're building or repairing a large-scale model like a 30-100cc balsa airplane, these metal servo horns are a must-have upgrade. You get two in the pack, each made from CNC-machined aluminum alloy for precision and strength – way more durable than plastic arms. They have a 25-tooth spline that's compatible with many popular servo brands like Futaba, Savox, Xcore, HL, HSP, and others. Each horn is 56mm (about 2.2 inches) long, with multiple hole positions at 21mm, 29mm, 37mm, and 45mm from the center, giving you flexibility in your setup. They're also suitable for large 1/10 scale RC cars. Installation is straightforward – just slide them onto your servo shaft and secure with the screw. The black anodized finish looks sleek and resists corrosion. Whether you're improving your plane's control surfaces or need a robust replacement part, these metal horns provide reliable performance and peace of mind during intense flights.