E-Blox Circuit Blox Builder - 4 Projects Circuit Board Building Blocks Toys Set For Kids Ages 8+Let your child enjoy hours of fun and creative play when you get this E Blox Circuit Blox Set! Designed for ages 8 and up, this kit features colorful building blocks that have electronic components in them that, when assembled properly, will make circuits that light different LEDs and a fi ber optic tree and spin a motor and fan. There are 4 different projects to build, and all parts are compatible with our Power BloxTM line to add even more fun to