Goteck 9257MG Metal Gear Digital RC Servo for Align Trex 450 500 Helicopter Plane Goteck GS-9257MG Metal Gear 450 Electric Digital Servo Features: Coreless Motor D Dual ball bearing Perfect T-Rex electric rudder straight Cost-effective Large torque, high-speed, high-resolution Suitable gyro: Futaba GY401 (FUTM0807, FUTM0808), GY502, etc. Specifications: Stall torque: 4 kg-cm(5V),4.5 kg-cm(6V) Operating speed: 0.07sec/60กใ(5V),?0.06sec/60กใ(6V) Operating voltage: 4.8V-6V No loading current:0.25A(5V),0.30(6V) Loading current:1.8A(5V),2.2(6V) Equipped with two ball bearings. Comes with a selection of servo arms/discs, mounting screws. Package size: 9 * 5 * 2cm / 3.5 * 2 * 0.8in Package weight: 40g / 1.4oz Package list: 1 * Goteck 9257MG Metal Gear Digital RC Servo