Features: High Torque Performances & Wide Compatibility:Engineered with precisions, the SG90 9g servo motor deliver exceptional torque (450° rotation) for responsive control in aircraft and robotics. Engineering:Weighing merely 9grams with nylons gears and impact resistant plastic housing, this miniature servo maintains positional accuracy (±1°) even during fast speed maneuvers. Multiple Level User Solution:for both entry level plane builders seekings components and advanced DIY robotics engineers requiring motion control module. precisions Flight Applications:Optimized for 450 class helicopters and fixed wing aircraft stabilization systems, while serving as essential actuator in industrial robotic arms and automateds prototypes. Durability Tested Mechanism:Militarys copper motor windings and triple layered dustproof casing ensures 50,000+ rotation cycles under 4.8V 6V operations, making it aviation grade hardware for professional aeromodelling tournaments. Specifications: Material: Plastic + nylons Size: 2.3x1.22x2.9cm/0.91x0.48x1.14inch Package Includes: 5Pcs SG90 9G miniature Servo Motor note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you!