NEGUROSU DENKO 阻止鳥類鏈　BDS-CH32 BDS-CH32

Feature

• For pigeons holding biological magnets (magnetite), a cylindrical magnetic field with a diameter of 250 mm around a magnet chain prevents flying.
• Because permanent magnets are used, the effect lasts semi-permanently.
• There is no radio wave damage to TV and it is harmless to human body.
• This is a kit with a 32 m long magnet chain and a set of supports.