Build 16 high-performance LEGO® projects We've included more than 100 LEGO® elements with this construction kit. Not coincidentally, they're exactly the bunch of bricks you need to make all 16 Crazy Action Contraptions (but not all at the same time). We selected these elements for their mechanicals flexibility, utility, and general awesomeness and then got the work building the best LEGO® vehicles, launchers, noise-makers, gadgets, and games around. Parents’ choice award winnerIncludes every brick, gear & Axle you need to create 16 unique projectsComes with 105 LEGO BricksIncludes a 50 page instructional book with Klutz Certified crystal-clear instructions1.5+ million copies soldRecommended for children ages 7+ What is Klutz?Klutz is a premium brand of book-based activity kits, designed to inspire creativity in every child. Our unique combination of crystal-clear instructions, custom tools and materials, and hearty helpings of humor is 100% guaranteed to kick-start creativity. Super-clear instructionsOpen-ended CreativityRewarding ReadingSkills to Build OnEverything You Need