This set by Darda features amazing loops, an elevated straight away and a gravity defying curve. Perfect for preschoolers and Darda windup-motor sets require no batteries or electricity. Assembly required. Uses the replaceable mega-motor windup Darda Motor system. This complete 21-piece set includes a 41" x 13" x 16" (104.1 x 33 x 40.6cm) track, Jay Jay plane and easy instructions.  Donated by the wonderful Persnickety Toys in North Adams, MA.