ummm absolutely none its just wood with graphite inside i think you haave got a bit confused....
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The lever and screw.
Simple Machines ended in 1998.
lever
A simple machine doesn't have any moving parts.
Simple machines are basic devices or mechanical powers on which other machines are based (eg, lever, wedge, pulley, wheel and axle, inclined plane, screw).
Fulcrum I think.