Magnetization/demagnetization is possible simply by inserting the tip of a screwdriver, hex wrench, etc. into the body and rubbing. It is possible to magnetize by rubbing the + part, and to get magnetic force by rubbing the – part.
A neat simple device to magnetize or de-magnetize screwdriver blades, tweezers, Allen/hex keys or similar tools made from steel. Supplied with instructions

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