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  • K'Nex - K'Nex Construction Kit
  • K'Nex - K'Nex Construction Kit
  • K'Nex - K'Nex Construction Kit
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Quality Used

K'Nex Construction Kit

$15.95
$37.78 $15.95
58% OFF RETAIL Sold out

Condition: Used - Excellent

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This product has passed our safety & quality‑check inspection, powered by smart technology to ensure it is ready for a new home.

Large K'Nex Maker Kit with sturdy carrying case. Includes hundreds of pieces, all shown here.

Comes with a Discovery Building Set instruction booklet, though we can't ensure all  20 models can be built with these pieces.

Ages 6+

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Condition Labels

Learn about our condition labels

When you make a purchase, we want you to know exactly what you are getting. So, we’ve devised a series of condition labels to help you.

  • New – In original unopened packaging. Some new products may ship directly from the manufacturer.
  • Open Box – Returns or products with original packaging that has been opened. Products may have been handled but show no signs of extended use.
  • New with Tags – Unused products with original tags.
  • Used - Like New – Item shows almost no signs of wear but does not come with original packaging or tags.
  • Used - Excellent – Item is used but in excellent condition, minimal wear, no significant
    scratches, scuffs, tears, stains, or pilling.
  • Used - Good – Item shows more wear or signs of use, like fading or minor scuffs. Any significant flaws will be noted in product description.
  • Used - Minor Flaws – Item is in good condition but has a flaw that is described in the product description.

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  • Shipping Guide

    Most orders ship via UPS or USPS and arrive 2-7 days after processing. The weight of your cart determines your shipping cost. Our flat rates range from $5.99 for small packages, $8.99 to $10.99 for medium-sized orders, or $14.99 to $21.99 for bigger packages. Oversized and heavy orders that may require two or more boxes may incur higher rates.

  • Hassle-Free Returns

    We inspect every product to ensure it's functioning and in excellent condition. Any special notes on a product's condition can be found in the description on the product page. If it's not as described, we'll take it back. It's that simple.