Description: A7 7-DOF Robot Mechanical Arm Kit with Servo For . Full Metal Construction: Hard Aluminium Alloy for high quality and durable character. 7-DOF structural design can make the robotic arm move flexibly, so it can grab objects in any direction. The joint of robot arm is connected by good bearings, which can make the arm move with the smallest friction. It consists of Seven, which enable the robotic arm move stably, accurately and flexibly. Great for learning DIY robotics, electronics, programming and Python programming. Specification: Operating speed: 4.8 seconds / 60 degrees (no V load) Operating speed: 6.0 seconds / 60 degrees (no V load) Stopping torque: 13 kg-cm (180.5 oz-in) at 4.8 V Stopping torque: 15 kg-cm (208.3 oz-in) at 6 V Operating voltage: 4.8-7.2 volts Gear Type: all metal gears Connector cable: heavy duty, 11.81 "(300mm) 20 kg digital servo digital gear: Dead Zoon setting: 4 microseconds Voltaeg: 4.8v-7.2v 20kg cm in (7.2v) Par: 18Kg cm. A (6 v) 7.2 seconds / 60 degrees at (v) Speed: seconds / 60 degrees at (6 v) Cable Length: 320mm Weight: 60g Size: 40x20x40.5mm./1.57x0.79x1.59inch. (servo) Package Includes: 1 Piece Robot Arm Clamp. 7 Piece Accessories 1 Piece Servo