This item is no longer needed as I replaced the lock on a new post. This is a key and cylinder removed unused from a new post from the popular bobi series. Three keys are included. I removed this because I replaced the handle with a non-key type when I purchased the post. Are you having trouble with your key, or do you want to switch to a key type? bobi bobi post bobi bobipost Spare key Bonbobi POST Sekisui Design Works