Key Ring
Keyrings can either be purchased from an NPC vendor in some towns or crafted by a player with at least 10.0 Tinkering skill and 2 ingots.
To unlock something that is locked with a key on a keyring, simply double-click the keyring and then target the locked item.
Drag a key onto a keyring to add it to the ring. A maximum of 20 keys may be stored on a keyring, the image changing as more keys are added. Different types of keys may be stored together on a keyring, although blank keys which do not match with any lock cannot be put on a keyring.
To remove a key from a keyring, double-click the keyring and target itself. Unfortunately, this will cause all keys on the keyring to drop into your pack.
Keys will retain their description, if any, when removed from a keyring.