Thames & Kosmos Bionic Robotic Arm STEM Experiment Kit Build a Mechanical Arm, No Batteries or Motors Required | Innovative System of Joysticks & Nylon Cables | Ages 8+ with help, 12+ Independent Play

Thames & Kosmos Bionic Robotic Arm STEM Experiment Kit, Toy of The Year Finalist, Build a Mechanical Arm, No Batteries/Motors Required | Innovative System | Ages 10+ with Help, 14+ Independent Play

Thames & Kosmos Mega Cyborg Hand STEM Experiment Kit | Build Your Own GIANT Hydraulic Amazing Gripping Capabilities Adjustable for Different Sizes Learn Pneumatic Systems

Thames & Kosmos Hydraulic Boxing Bots STEM Experiment Kit | Build Two Hydraulic-Powered Boxing Robots! | Explore Hydraulic, Water-Powered Systems | Challenge a Friend to a Robot Duel!