IIT 90262 Magnetizer Demagnetizer ToolIIT 90262 Magnetizer Demagnetizer Screwdriver Tips Tool Product description: EASY TO USE No batteries or electrical required. To magnetize a tool, simply slide it through the center hole. To de magnetize a tool, slide it through the side slots. If you need to work with electronic parts requiring demagnetized tools, just insert the screwdriver tip in the negative terminal cavity. To magnetize the screwdriver tip, insert it in the positive terminal