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It’s back! The K’nex 70 Model Building Set with 705 pieces is on sale for just $19.99 at Amazon. Save 56% on the original price–normally $44.99. Compare to $34.99 at Kmart.

The set includes everything needed to build a hot air balloon, boats, trucks, a sand castle and more! This is the ultimate gift for building fanatics.

Shipping is free with Amazon Prime or a $35 qualifying purchase.

We posted the set on sale a few days ago, and it sold out quickly at the sale price. If interested, be quick! Once the price jumps back up, the deal is over.

K’nex 70 Model Building Set, 705-Piece Set (reg $44.99) $19.99
Free shipping with Amazon Prime or a $35 purchase
Final Price: $19.99