Split Ring Key - Keychain Keys
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I'm surprised nobody thought of this before, but the key has finally become the keychain with the cool new Split Ring Key. Unlike basically every single key ever made that has a tiny hole for attaching to a keychain, these unique keys enlarge the holes to become the actual keyring for attaching other keys too. These real working keys by designer Scott Amron come in a set of two and are blanks, ready to be cut by any key cutter to fit KW1 or SC1 keyways. They're also great for runners and swimmers too.
Let us know in the Comments below if you can think of any other cool uses for a keys like these!