Hammer

The Hammer is found at Spectacle Rock in The Adventure of Link. It is used to smash the large boulders that block many roads and paths in the game. The Hammer, again, appears in The Legend of Zelda: Phantom Hourglass, unlike other appearances the Hammer can be charged to create a bigger blast radius. Here, one of Link's fairy partners holds the hammer with Link motioning the movement. This item is essential to complete Mutoh's Temple and the monster that resides inside.

In the Beta version of The Wind Waker, the Skull Hammer was just the Hammer. Why they replaced it is unknown.

Other hammers

 * Magic Hammer from many Zelda games
 * Megaton Hammer from Ocarina of Time
 * Skull Hammer from The Wind Waker