Get ready for the ultimate marble run building set it would appeal to aspiring engineers and rollercoaster thrill-seekers: the K'NEX Marble Coaster Run with Motor! This innovative set allows you to flex your creative muscles and build a fully-functional marble coaster from the ground up. With over 500 pieces and 3 template builds, this model kit is perfect for all skill levels from beginner to pro. Hook up your coaster to the working motor and watch your creation come to life with exciting movements and chain reactions that you can watch again and again. And with its sleek blue and yellow colouring, this coaster will look great in your bedroom, game room, living room, or even an office. Recommended for kids and kids-at-heart ages 8 and older. 500+ PIECES This epic building set comes with over 500 pieces, including 3 accordion tubes, a see-saw marble scoop, and a bankshot bounce pad that will really add some WOW to your coaster! MOTORIZED MOVEMENT Experience the excitement of watching your creation come to life with the battery-powered motor! 3 BUILDING LEVELS This kit is ideal for builders of all skill levels. Kids can start with the beginner build, then work their wa