Explore the exciting world of robotics with the 4M KidzLabs Robotic Hand Kit. This educational science kit contains all the parts needed to create a functioning artificial hand. Pulling the attached cords cause the hand's thumb and fingers to clench in a realistic gripping motion. No batteries required. Detailed assembly instructions included. Recommended for ages 8 and up. Assemble a robotic human hand and amaze your friends with its realistic gripping ability.