The 3 in 1 Techno Gears Marble Mania TwinTwister includes over 200 pieces and is an action-packed marble maze with 2 spiral lifters and multiple building options. Complete with colourful twists, turns and tracks, the set includes both a hand crank and a motorised gear lifter to take your marbles up to the top of the run for another exciting adventure. Enjoy even more fun by building the optional Corkscrew and Vortex 100+ piece sets as well! Educational Benefits: Encourages thinking and learning, challenges problem-solving skills Promotes fine motor skills and confidence and problem solving. By encouraging children to follow directions, create patterns and understand mechanical flow, children will develop core cognitive development skills. Builds knowledge of mechanics and engineering, this product aligns with the Science, Technology, Engineering and Math standards. Suitable for aged 8 years and over, Manufacturer: Learning Journey International LLC