Question

Handle of screw driver is not made up of metal

Answer 1

Answer:

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Explanation:

When your hand gets sweaty or oily then a metal handle would make screwing anything pretty impossible. Your hand would slip. Some of the best screwdrivers have wooden handles because of this.

For a metal handle to work you'd have to knurl it then that makes the screwdriver cost so much nobody will but it.

You want the weight of a screwdriver to be small because you may be using it a lot during the day. If it's heavy it increases fatigue.