This set of four keychain magnets is designed for metal testing, with a compact design suitable for purse and key hanging applications. The magnets provide effective detection of ferrous metals, assisting users in material identification during various activities. The compact form factor ensures they can be carried conveniently without occupying excessive space. Each unit includes a keyring attachment for keys or for securing to bags. The set of four offers quantity sufficient for multiple users, locations, or as replacements. These keychains are suitable for general use by individuals who require basic metal testing capabilities in their daily routines or professional activities.
