Futaba S9257 EP Heli Digital Rudder ServoFEATURES:This is the Futaba S9257 High Speed Digital Servo for Helicopter Gyro Operation.For use with the Futaba GY401 (FUTM0807, FUTM0808) and the GY502 gyros Equipped with two ball bearings One year limited warrantyINCLUDES:Futaba S9257 High Speed Digital Servom with 0.83" (21mm) diameter round horn, 1.5" (39mm) diameter four-point horn, 1.2" (32mm) diameter six-point horn, mounting hardware, digital servo precaution sheet and warranty cardREQUIRES:Connecting to gyroSPECS:Length: 1.40" (35.5mm)Width: 0.59" (15mm)Height: 1.13" (28.6mm)Weight: 0.9oz (26g)Torque: 27.76 oz-in (2.0 kg-cm) at 4.8VOperating Speed: 0.08sec/60° at 4.8VCord Length: 7.9" (200mm)COMMENTS:For use only with FM, PCM and HRS systems. Do not use with AM systems