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|NSI1008: Features: -Smithsonian motor - works.-Build a working model of a 4 - cylinder engine.-Valves rock, spark plugs fire and pistons drive crankshaft.-Battery operated moving parts and lights.-Watch the spark plugs fire and the valves open and close.-See how the pistons fire with the correct timing and watch the belts and fan turn.-Build a real working battery powered with real lights and sounds.-Uses 2 'AA' batteries, not included.-Ages 8 and up. Includes: -Includes 35'' x 23'' poster.|