3 Pcs Upgrade HuiNa 1592 Metal Cylinder Without Servos

3 Pcs Upgrade HuiNa 1592 Metal Cylinder Without Servos For RC 1:14 RC Alloy Excavator 22CH RC Truck Toy Parts

The kit is made of the main arm, second arm and bucket arm,  the metal cylinder make them have much more power than the original one, whatever you want how to use your excavator, grabbing heavy, breaking stone or digging the earth. You can use kit with 360-degree metal digital servos for better effect.