What is it made from? why? A screw driver
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The raw materials for most screwdrivers are very basic: steel wire for the bar and plastic (usually cellulose acetate) for the handle. In addition, the steel tips are generally plated with nickel or chromium.
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Screwdriver materials
Screwdrivers are made from either chrome vanadium steel or carbon steel.
In the early 1930s, the Phillips head screw was invented by Henry Phillips. Automobile manufacturers now used car assembly lines. They needed screws that could take greater torque and could provide tighter fastenings. The Phillips head screw was compatible with the automated screwdrivers used in assembly line.
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