Feature: This is a small head with high torque and high cost performance. It can do 2-degree-of-freedom movement in horizontal and vertical directions, facilitate the installation of cameras, and realize image monitoring, image recognition, positioning and tracking. Equipped with infrared sensor or ultrasonic ranging sensor can be combined into an integrated detection device, so that the robot can sense the surrounding obstacles, so as to achieve the robot obstacle avoidance function. Of course, you can also install a variety of sensors, through the steering gear controller to complete a variety of innovative interactive works The Kit comes with hardware(bearing and screws kit) and includes 2 MG996 servos. Package Includes: 1 x Multi-function bracket: 1 4 x M3*12 screws 4 x M4*8 screws 1 x Long U bracket 2 x Steering gear 1 x Bearing 3*8*3 1 x M3*8 screws 2 x MG996 servo