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KNEX

K'NEX - Marble Coaster Run with Motor‚ 504 Pieces, STEM Building, Kid Construction Set‚ Ages 8+

K'NEX - Marble Coaster Run with Motor‚ 504 Pieces, STEM Building, Kid Construction Set‚ Ages 8+

$61.00 USD
$61.00 USD
Sale Sold out
Shipping calculated at checkout.

About This

  • 500+ PIECES – This epic building set comes with over 500 pieces, including 3 accordion tubes, a see-saw marble scoop, and a bankshot bounce pad that will really add some WOW to your coaster!
  • MOTORIZED MOVEMENTS – Experience the excitement of watching your Marble Coaster Run come to life with the battery-powered motor that keeps the fun going!
  • STEAM LEARNING FUN – Building with K'NEX helps strengthen fine motor skills, manual dexterity, and spatial relations. Both exciting and educational, K'NEX can help children learn basic principles of physics, engineering and architecture.
  • SPIRALING COASTER TRACK – Create epic designs for your coaster with 11-feet of spiraling coaster track - how cool!
  • 3 BUILDING LEVELS – This kit is ideal for builders of all skill levels. Kids can start with the beginner build, then work their way up to WOW with the more complex templates.
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Baby Essentials

✨ Tiny Care. Tiny Comfort. Tiny Joy. ✨


Whether you’re preparing for your baby’s arrival, searching for everyday must-haves, or finding the perfect gift, Tiny Joy is here to bring warmth, care, and happiness into your family’s life.

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Reviews

  • ⭐️⭐️⭐️⭐️⭐️

    I bought a STEM toy for my 6-year-old and she’s been playing with it non-stop. It’s fun and educational—win-win!
    Samantha K.

  • ⭐️⭐️⭐️⭐️⭐️

    Great variety and safe materials! My twins love the puzzle sets—they’re colorful, sturdy, and keep them engaged.
    David M.

  • ⭐️⭐️⭐️⭐️⭐️

    The packaging was adorable and everything arrived in perfect condition. My son screamed with joy opening it!
    Grace T.

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Frequently Asked Questions

How long does shipping take?

Shipping takes place within 3-5 business days. If there is a problem with the shipment of the product, we will notify you via the email address you entered when ordering.

Is free shipping available?

We do not currently offer free shipping. However, this may be added at some point. We apologize.

How can I get a tracking number for my order?

If your order has been shipped, we will add the tracking number to your order and notify you via the email address you entered when ordering.

How do I process a return or exchange?

For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.