To magnetize or demagetize screw drivers, tweezers, tool bits, screws and other steel objects.This magnetizer/demagnetizer is lightweight and portable to fit in tool bags and super easy to store in workshops or tool sheds. Helps to give a magnetic property to make screws easily to pick up.A perfect helper for you repairing work. Useful for demagnetizing tools before use on magnetically sensitive surfaces for electronic work. To magnetize the screwdriver tip, insert it in the positive terminal cavity. No batteries or electricity required. Easy to use. Just insert the object into the corresponding cavity for several times for magnetizing or demagetizing Perfect tool for carpenter, mechanic, DIY lover and others in shed or workshop.If you need to work with electronic parts requiring demagnetized tools, just insert the screwdriver tip in the negative terminal cavity., Weight: 0.220462262 Pounds, Manufacturer: Garosa