because
Slotted Phillips (cross shape) Torx (star burst) Robertson (square peg) Reid and Prince (thinner than a phillips) Awl Head (hexagonal)
It's used to work with flat screws, which,frankly are really a pain. I'm so glad we now have Robertson and phillips screws.
Hex, or Allen screwdrivers are for screwing and unscrewing Allen head screws.
They are used to loosen and tighten screws
To drive screws.
They were first used as a laxative for African Elephants
Cordless screwdrivers are sold at hardware and home improvement stores across America. Some of those stores include Lowes, Home Depot and Ace Hardware.
JAMIE ROBERTSON. In 1921 he used a tape recorder and sang the song God bless America
A screwdriver is used to turn screws in or out.
Claude Monet used media such as hammers, screwdrivers, wrenches, and drills to do his artwork.
they used drills, hammers, screwdrivers, and chainsaw
The first screwdrivers had a steel shank with wood handle.