Knex - Stunt Jet Collect & Build the blue Stunt Jet, 2 of 4 in the Air Action Series. A motion-activated sound module provides realistic sounds & puts you in control. Comes with 243 bricks, rods, & connectors, wheels & specialty parts. There is even a K' Nex man to sit in the pilot's seat. Build the lead model or an introductory model, & then combine with the Switch Wing for a bigger flier. Or combine all four to build the Ultra Plane. Each set sold separately. Batteries included.AGE: 5+ PIECES: 243