Build 3D circuits into your structures without wires! Conductive tin plated parts are used to create 3D circuit paths from the battery pack to the LEDs to integrate lights into your structures.

• STEAM product that teaches how to build 3D series and parallel circuits to light your imaginative creations
• Online instructions show you how to build a cat whose eyes light up red, blue or green and can even flash on and off!
• Contains 73 parts (26 unique, patented parts including 6 LEDs you won't find in any other toy brick set)
• Directly compatible with other brick building construction sets
• Patented technology enables you to build 3D circuits into your structure with no wires!