TS-3688 Green Science Saltwater Power Robot Kit
Build a miniature robot racer that is powered by salt water! Fun and educational, each kit contains plastic parts to assemble one 4 inch robot, including body parts, axles, wheels, and motor. Insert the included aluminum and carbon sheets then add salt water with the pipette dropper, creating a battery that powers the motor! Detailed instructions included. Made by 4M - Toysmith. Pack of 6 kits.