CDX Blocks: Flyer 539 Pieces, Building Brick Set, Gravity Powered CoasterDynamix CDX Blocks Sidewinder Roller Coaster Unboxing YouTube Sealed Cdx Blocks Sidewinder Roller Coaster Building Toy Set, 825 CDX Blocks: Sidewinder 848 Pieces, Building Brick Set, Gravity CDX Blocks Brick Construction Cyclone Roller Coaster Building Set. Hold onto your hats, folks, because this CDX Blocks Sidewinder Roller Coaster Building Set is about to take you on a wild ride! This 825 piece set allows builders to construct a fully functional, gravity powered looping roller coaster, designed by a real roller coaster engineer. The Sidewinder model features a modern steel coaster design with twists, turns, and a full vertical loop, offering endless fun and educational value. It's a perfect blend of play and learning, promoting STEM principles through engaging mechanical construction and operation. The CDX Blocks Sidewinder Roller Coaster Building Set features: A gear shaft and crank to simulate the roller coaster's initial hill climb. A smooth, high performance track system for exciting descents and loops. Detailed, realistic coaster car that completes the entire track circuit using gravity. Large, clear instructions for a rewarding building experience. Designed for ages 14 and up, making it an ideal project for teens and adults.