Made of high quality metal Exquisite workmanship, use Adjustable Damping Servo Arm for RC Car Hole to Hole Length: 12mm Total Length: 23.3mm Color: 4: Black Material: Aluminum Alloy Package Contents: 3 x RC Car 25T Servo Arm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.