The function of a screwdriver is to turn a screw into or out of materials.
Hex screwdrivers and Allen keys are designed to fit in Allen head screws,used a lot in machinery.
I couldn't exist without a good set of screwdrivers.
Hex, or Allen screwdrivers are for screwing and unscrewing Allen head screws.
Jewelers screwdrivers are very small examples of normal screwdrivers, watchmakers use them too.
Screwdrivers can cost as little as a dollar. In all tools you get what you pay for. I have $15 dollar screwdrivers that have lasted over 20 years and I've broken many 1 dollar screwdrivers.
Many sizes of screwdrivers are included in a standard screwdriver set. The sizes range from half an inch up to two inches. One can buy individual screwdrivers as well.
Screwdrivers.
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Pliers, and Screwdrivers
Pliers, and Screwdrivers
To drive screws.
It has something to do with Citrix.