1. six degrees of freedom machines are widely used in college teaching, personal DIY production and maker education 2. Its power system is composed of 6 servo motors, which can demonstrate the front and back, up and down, and left and right grasping and handling of the robotic arm 3. All bracket accessories are made of 2MM thick aluminum plates, effectively improving the stability of the robotic arm itself 4. Stable performance, flexible and smooth steering of the robotic arm 5. High cost-effectiveness, few fault points, and extremely low maintenance costs Servo model: DS3115 digital servo/ analog servo (not included in the shipment) Working voltage: 4.8-7.2V No-load current: 100mA It's DIY kits, needs to finish by yourself. Colour:As Shown Material:Metal Package Contents: 1 * For Robot arm accessory DIY kit(Excluding Servo) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.