Features 1、High precise metal gear, stable and durable action. 2、Mini size, will not burden the remote control aircraft body. 3、Suitable for small helicopters, small fixed‑wing F‑3D/3A aircraft, etc. 4、Metal gear, 4.3kg servo, provide good usage experience. 5、Professional manufacturing, stable performance and high reliability. Item type: 4.3kg Servo Material: metal Color: black Weight: Approx. 23g Working frequency: 1520μs/ 330hz (analog: 1520μs/ 50hz) Working speed (5.0V): 0.14 seconds / 60 degrees when no load Working speed (6.0V): 0.12 seconds / 60 degrees when no load Stall torsion (5.0V): 4.3kg.cm (59.73 oz / in) Stall torsion (6.0V): 5.0kg.cm (69.45 oz / in) When the PWM signal is 1.0 to 2.0, the working angle is 90° When the PWM signal is 0.5 to 2.5, the working angle is 180° Application: suitable for small helicopters, small fixed wing Size: Approx. 23.8x11.7x21.5mm/0.9x0.5x0.8in Package List 1 x Servo 4 x Servo arm 3 x Screw