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ENDLESS BUILDING FUN: Features 417 colourful K'NEX rods and connectors to create up to 50 imaginative models including animals, rides, and robots STEM EDUCATIONAL TOY: Helps develop fine motor skills, EASY TO BUILD: Includes a step-by-step instruction guide to help kids follow along or create their own designs IDEAL FOR AGES 3 + : Perfect for encouraging independent play, problem-solving and screen-free entertainment STORAGE INCLUDED: Comes in a handy storage tub to keep pieces safe and tidy between builds