K'NEX Thrill Rides Kraken's Revenge Roller Coaster Building Set 550+ pc Age 9-14

8 missing pieces - will not affect design or performance. NO BOX From the manufacturer: K'nex Kraken's Revenge #17616 - Amazon Exclusive Set comes with: •568 classic K'NEX pieces to build your very own coaster • Battery-powered motor that gives life to the K'NEX pieces (2 "AA" batteries required, not included) •Easy-to-follow instruction manual (Link to manual / building instructions is included.)