I love the idea behind this product. I ordered three packs and use them to attach my car keys to my work keys. The device is also small enough for me to attach my working anniversary key to an ID card strap. After about three weeks the internal magnet slipped out of one side of the magnet link attached to my key so I used a replacement which also failed after a couple of weeks. I figured it must be the weight of the buttons so I used super glue and put the magnet back in place. Upon closer inspection, I noticed a hairline crack that others have mentioned in their reviews. About 5 months later, the one associated with my anniversary failed in the same way. I still like the size of the device so I just ordered the titanium version and hope it lasts longer. I only ordered one pack as it is significantly more expensive than the plastic version.
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