K’nex shark attack coaster STEM Building Set
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This has been open and built one time. To my knowledge, all 170 parts are in the box. Motor was tested before posting. Batteries are not included.The set includes micro K'NEX rods and connectors that snap together, plus a coaster car and track. A working battery-powered high speed blaster motor sends the coaster car l through twists and turns.flawless for builders ages 7 and up, K'NEX supports key areas of a child's developmental growth, like fine motor skills, manual dexterity, and spatial awareness, putting them on a path towards a greater understanding of STEM subjects. Easy-to-follow instructions are included for a frustration-free building experience. Perfect for everyday use. top-grade materials and excellent craftsmanship ensure long-lasting durability.
