Unique bristle based action magically powered by vibration. This pocket sized race car navigates around obstacles & changes direction on and off the track. Zip them accross the table and race them on the speedway track. Multiple sets may be attached 2gether. Includes 2 micro drifters racers with batteries, 8 tracks, 2 replacement batteries. Each micro drifter car is 2.25" long. They do not drift. I'm also comparing this race-track with the micro chargers jump track race by moose toys. Check out micro chargers jump track race ultimate review.