Designed by an actual roller coaster engineer, the Cyclone Roller Coaster building block kit is constructed for quick assembly and features an ingenious gear system to bring the roller coaster up the initial hill climb for realistic action and playability. It is our flagship design from our CDX Blocks line, modeled after the classic big wooden roller coaster and the model set and accessories are compatible with the world's leading building block systems! You can operate the ride using the included hand crank or consider adding our custom motor to automate the action. Kit comes with over 900 pieces