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Amazon.com: K'NEX Cyber-X C5 Neostrike - Blasts up to 60 ft - 176 Pieces, 4 Builds, Targets, 5 Darts - Great Gift Kids 8+ : Toys & Games
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Amazon.com: K'NEX K-FORCE Build and Blast® – Dual Cross Building Set – 368 Pieces – Ages 8+ – Engineering Education Toy : Toys & Games
Amazon.com: K'NEX K-FORCE K-20X Building Set (165 Piece) (Amazon Exclusive) : Toys & Games