Quad-blaster technology will take down four walls at once!Demolition Lab for Kids - Breakdown Building by SmartLab is a bestselling and absolutely knock-you-down experimental kit for older boys and girls. This unique toy is a building assembly set, a physics science kit and a hands-on experimental lab - all in one. This mind blowing science toy allows kids to construct a 5-story building and demolish it with strategically placed blasters. The Demolition Lab for Kids - Breakdown Building brings the destruction to the run-down neighborhood structure, but constructive look into science behind these processes. Young engineers explore energy, momentum, gravity, physics and more experimenting with this demolition kit! This breakdown building set comes with one-touch Quad Blaster detonator, 18 walls, 8 floors/roof radio tower, 18 footing clips, and detailed instructions. This Educational Toys Planet's demolition lab kit requires 3 AA batteries (not included). The Breakdown Building Demolition Lab guarantees hours of educational destruction and destructional fun!