The Hudy Aluminum Clamping 2 Hole Servo Horn is a CNC-machined throttle servo horn. The clamp design allows easy assembly and maximum strength to eliminate the flex associated with composite servo horns. Ultra-strong construction provides very long life and durability. Drilled and tapped for 3mm-linkage hardware. Machined from strong Swiss 7075 T6 aluminum and black coated. Laser engraved for easy identification. Package includes one 25 tooth double arm clamping servo horn.