Collect & Build Flash, #3 of 4 in the Robo Battlers Series - motorized for exciting mechanical movement! This set comes with 120 K'NEX parts, primarily micro rods & connectors to build a motorized robot. And just as his name suggests, Speedy moves with lightning quickness on wheels! And that's not all - Speedy combines with Crawler to build an even bigger motorized robot! Recommended for builders ages 7+. Requires 2 "AA" batteries, not included.