It comes with adapter ring to make any case MagSafe compatible Magnetically snap on and off your phone with ease and come with a matching grip Offers a sleek and secure way to carry your cards on your phone Can hold up to 3 credit cards or 6 business cards, depending on the card thickness. Works best with rounded corner business cards Built-in magnets securely attach to MagSafe-compatible cases Credit cards are shielded from magnets when in wallet