This set includes four keychain magnets constructed with rare earth neodymium elements, designed specifically for brass testing and jewellery verification. Each magnet provides a reliable method for distinguishing ferrous metals from non-ferrous metals, assisting users in identifying metal composition. The keychain design ensures the magnets remain portable and accessible whenever testing is required. The set of four offers multiple units for different locations, users, or as replacements. The magnets are encased in protective housings to prevent damage during regular handling. These keychains are suitable for hobbyists, jewellery workers, and professionals who regularly encounter various metal types and require basic verification tools.
