Servo JR DS8900G Manufacturer JR Applications Heli/Gyro, 4.8V Only Type Digital High Speed Torque 4.8V 72 oz/in (5.14 kg/cm) Torque 6.0V - Speed 4.8V 0.05 sec/60 degrees Speed 6.0V - Dimensions 41mm x 38mm x 20mm Weight 59g Bearings - Gear Type Nylon