With the Wiha 40010 magnetizer block, you gain complete control over fasteners during intricate assembly and repair tasks. You no longer have to worry about dropping small screws into tight enclosures. Simply slide your screwdriver blade, bit, or tweezers through the magnetizing channel to hold metal hardware securely. When working around sensitive electronics where magnetism could cause damage, slide your tool through the stepped channel to demagnetize it instantly. Powered by permanent C8 industrial ceramic magnets, this compact 52 mm block delivers dependable performance whenever you need it, completely free of batteries or charging.