Building with K'NEX is easier than ever, with the Beginner 40 Model Building Set! Featuring all-new easy-build parts, children aged 5+ can now enjoy a frustration-free building experience with K'NEX. New Parts! The new parts - a barbell-shaped rod that easily sandwiches between 2 connectors, and a flat panel piece that provides structural support - were specifically designed to address the needs of younger builders, who can easily build 2 flat shapes and then connect them together into a 3-D creation! Plus, newly designed wheels pop right on - they'll be on the go in no time! Educational Fun Building with K'NEX supports a child's developmental growth and puts them on a path towards a better understanding of STEM subjects. As they fit the pieces together, they're developing spatial awareness and honing their fine motor and dexterity skills. Give your child the gift of creativity with K'NEX and think outside the blocks! Choose between Guided Builds or Creative Free-Styling This set contains 141 parts and easy-to-follow, step-by-step building instructions and ideas for 40 different models. Your little builder can also use the parts to design and create from their own imagination! Parent-Friendly Too! This set comes packaged in a sturdy suitcase-style box with a handle for easy clean-up and portable storage. For 5 year old builders allows them to build on a flat, 2D surface, then sandwich the flat builds together into a 3D creation! This beginner building set includes 141 parts, including K'NEX rods and connectors BUILD & REBUILD: Instructions and ideas for 40 different models are included, like a car, a skyscraper, an airplane, a rowboat, and so much more! Set comes with an easy-to-follow instruction manual. Perfect for Ages 5+ K'NEX encourages imagination and engineering skills through rod-and-connector construction sets.