Check the listing for details. STEM Projects Robotic Octopus. Condition: New. Listed at 13.99 USD. STEM Projects Robotic Octopus LEARN ABOUT TENSION AND COMPRESSION! Fun and easy to build. This set will help kids understand how tension and compression work to help the robotic octopus tentacles open, close and pick up items! The enclosed learning card is full of scientific facts, key words and assorted information presented in a fun way! This set includes the robotic octopus plastic parts, string, sticker sheet, an easy to follow instruction sheet and a learning card. If you are not entirely satisfied with your purchase, we’re here to help. Feedback:We appreciate your FEEDBACK!!! If you have had a wonderful experience shopping with us, please leave us positive feedback! We strive to bring you the best products, for the lowest prices, all while offering excellent customer service! If you are not satisfied, please contact us via eBay messages, so that we may resolve any issues promptly. Thank You for Shopping with BargainRanger!