KST BLS815 20KG Large Torque Metal Gear Servo for 550 700 Class Helicopter CyclicDescription Brand KSTItem BLS815Operating Speed 0 09sec 60 6 0VOperating Speed 0 08sec 60 7 4VOperating Speed 0 07sec 60 8 4VStall Torque 20Kg cm 8 4VStall Torque 17Kg cm 7 4V Stall Torque 14Kg cm 6 0VDimensions 40 5 20 38mmOperating Voltage 6 0V 8 4VOperating signal 1520us 333Hz 900 us 2100 usMotor type BrushlessBall Bearing 2BBWeight 70gUsage for 550 700 Class Helicopter CyclicFeatures High quality brushless motorsHigh strength 2BB ball bearingsStandard rudder servo armMetal steering gear long service lifeGood performance digital servosPackage Included 1 x KST BLS815 20KG Large Torque Metal Gear Servo for 550 700 Class Helicopter Cyclic