4M 9" Robotic Hand Stem Science Diy Kit $19.99 Default Title Out of stock Please fill in the form below if you'd like to be notified when it becomes available. Your Email Send This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply. Assemble a robotic human hand and amaze your friends with its realistic gripping ability. Detailed instructions are included. Completed hand is about 9” long. 8yr+