Unlimited motorized action! Build a motor-powered helicopter with a 17" (43cm) spinning propeller and missiles that really shoot! Rebuild into a missile-firing spider that really crawls or a bumper car that automatically changes direction when it hits an obstacle! * Includes 2 Idea Books with building instructions for all 3 models, plus inspiration for additional models. * Requires 6 AA batteries, not included.

Unlimited motorized action!Build a motor-powered helicopter with a 17" (43cm) spinning propeller and missiles that really shoot! Rebuild into a missile-firing spider that really crawls or a bumper car that automatically changes direction when it hits an obstacle! * Includes 2 Idea Books with building instructions for all 3 models, plus inspiration for additional models. * Requires 6 AA batteries, not included.