A must-have pocket tool for an FPV drone racer-- Never lose in drone racing tournaments again with this digital FPV drone servos stability tester. Tune and stability drone to 100% accurate balance-- Tune and stabilize servo to its 100% maximum capacity. Test for any subtle changes between different steering gears to its optimum potential. Simply connect servo and test-- Simply connect the output directly to the drone to check the consistency and stability of the servo. No need for any radio or r
