This is the Smithsonian® Motor-Works Kit by NSI International For ages 8 years and up FEATURES: Build a working model of a 4-cylinder engine Valves rock, spark plugs fire and Pistons drive the crankshaft Screws together and is easy to build Battery operated moving parts and lights Includes color poster (35" x 23") Includes complete instructions INCLUDES: (2) Washers (2) Shafts in various lengths (4) Exhaust valves (4) Intake valves (8) Valves stems (4) Piston pins (8) Piston halves (4) Connecting rod keepers (4) Connecting rods (8) Timing Cams (8) Rocker arms (1) Crankshaft (1) Crankshaft pulley (1) Fan pulley (1) Fan (1) Engine mounting stand (5) Bearings (1) Clutch housing (1) Oil pan (1) Lower crankcase (1) Rocker arm cover (1) Upper cylinder head (1) Timing belt (1) Timing wheel (1) Timing gear (1) Belt tensioning pulley (1) Lower cylinder head (1) Cylinder block (1) Dipstick (1) Positioning jig (1) Timing belt cover (1) Intake manifold (1) Exhaust manifold (1) Carburetor cover (1) Carburetor bowl (1) Front half of water pump (1) Rear half of water pump (1) Flywheel clutch (1) Fan belt (1) Head gasket (8) Valve springs (1) Distributor assembly (1) Drive module (1) Battery pack (67) Screws (1) Color poster with instructions REQUIRES: (2) AA batteries (ASCP0302 for a 4 pack) Scissors Screwdriver COMMENTS: Adult supervison required Due to small parts that could cause a choking hazard please keep away from children 3 years of age and younger bl 10/6/09