Not Your Average Model Engine! -- Build a working 4-cylinder model engine while learning about the four strokes of an internal combustion engine. -- With the Gas Engine Model Kit, you can watch the spark plugs fire and the valves open and close. There are over 100 plastic parts that easily screw together. -- Appropriate for ages 8 and older. Skill Level II. Powered by 2 AA batteries (not included).

$29.95

Click here to buy from Edmund Scientifics.

Celestron Binoculars Upclose 10-30x50 - Zoom 10 To 30 Power

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