464 Piece K'NEX Supersonic Swirl Building Set $12.18 (Reg $21) + Free Shipping With Amazon Prime or $35 Order

464 Piece K'NEX Supersonic Swirl Building Set $12.18 (Reg $21) + Free Shipping With Amazon Prime or $35 Order. The Supersonic Swirl ride, part of the space-themed Amusement Park Series, features swirling and twirling motorized arms that take K'NEXmen riding up and down while spinning through space. The set includes easy-to-follow building instructions to set-up your amusement park in no time! Nice motorized set and lowest price it's ever been.

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