KLUTZ LEGO® Crazy Action Contraptions is a brand-new book of brand-new, high-performance projects. From the Supercharged Speedster to the Squeezeclaw Grabber to the Wall Rocket Racer — all these contraptions spin, stretch, speed, or spring into action. And all of them are totally buildable thanks to super-clear instructions and step-by-step diagrams. Comes with: 105 LEGO® bricks.  Ages 7 and up.