The is the construction kit that forms a motorized, rotating Ferris wheel, recalling George Ferris Jr.'s original "Chicago Wheel" from 1893. The 890 included parts include plastic girders, connectors, and gears that snap together to form the 23"-tall Ferris wheel's platform, frame, and eight swiveling passenger cars. The battery-powered motor and four spur gears rotate the wheel clockwise or counter clockwise at eight revolutions per minute, recreating the intricate mechanical design and leisurely pace that distinguish the grandest Ferris wheels at fairs and theme parks. The color, step-by-step instruction manual enables simple assembly. Requires two AA batteries. Ages 9 and up. 23" H x 18" W x 9 1/2" D. (6 3/4 lbs.)