Small Key

Small keys have been around for a long time, ever since the first Zelda game. Keys are used to open a locked door small keys are usually found in small chests, and usually guarded by a puzzle or enemy. Sometimes they are held by a specific enemy, usually such enemys are mini-bosses. They do not open the door to boss rooms, for said doors, you need the Boss Key, Big Key or Gold Sculpture depending on which Zelda game you happen to be playing.