Modular keychain with a body made of overlapping plates and a fastening ring. The system is available in three sizes and with a nut base or a knurled insert, to adapt to keys of different types and thicknesses. The included spacers allow you to adjust the arrangement of the keys and to mount even old-style keys, keeping them tidy and silent. The structure closes with through screws and offers a functional accessory for keeping multiple keys together in a pocket or bag.