This unique product enables you to retain an item – keys, mobile phone, etc, with just the power of a magnet. But what a magnet! The unit consists of 2 ‘halves’, each with a sturdy split ring. You mate the two halves and they will snap together with tremendous force! Don’t let your fingers get between them, the strength is scary. You can pull them apart with some effort, thanks to the powerful rare earth magnets, but to all intents and purposes, the unit will remain secure, until you need to separate them.