The EMAX ES9257 digital servo is high quality and ideal for RC 450 /500 Helicopter Tail. With plenty of torque and ample speed, the ES9257 is the perfect budget everyday servo. Supplied with mounting hardware and additional servo output arms. I personally use this Servo on my 450 Heli T-Rex and also a HK450 and HK500GT. 

Features:
100% brand new.
High quality, ideal choice for RC 450/500 Scale Helicopter Tail.
With bearing, masses of torque, excellent speed, the gear set and case are super tough.
Includes servo horns and mounting screws

Specifications:
Signal: Digital
Voltage: 4.8~6V
Speed @ 4.8v: 0.08 sec @ 60 deg.
Torque @ 4.8v: 2.5 kg.cm
Size: 34.95 * 30.1 * 14.9mm
Weight: 22.3g
Plug available: FUT;JR

Package information:
Package size: 6.0 * 5.5 * 3.5cm / 2.4 * 2.2 * 1.4in
Package weight: 39g / 1.4oz
Carton box

Package list:
1 * EMAX ES9257 plastic digital servo
1 * Servo horns and fitting set