Split rings. Carabiners. Keyfobs. S-biners. Hooks. Bottle openers. Bottlehooks. You have a lot of different options to keep track of your keys, so what makes this revolving brass key ring from Button Works so special? For starters, the mechanism is unlike anything we’ve ever seen before and that’s probably because it’s a reproduction of a key ring from the late 1800s. All you have to do to secure your keys is align both brass notches on the discs, slide your key in and then slide the discs again. You can’t take the easy way out and ram all your keys on at once, but it’s more than worth it in our opinion for this 100% brass, Made in Japan option.