Granite hammer

The granite hammer is a warhammer dropped by the Grotesque Guardians that can be found on the Slayer Tower's rooftop. Level 50 Attack and Strength are required to wield it.

It acts as a rock hammer in the inventory, but will automatically smash gargoyles when it is equipped.

Special attack
The granite hammer has a special attack, Hammer Blow, which consumes 60% of the player's special attack energy, and deals an attack with 50% increased accuracy, while adding 5 damage to the attack. This extra 5 damage applies even if the player was supposed to deal zero damage.

Trivia

 * The examine text is a reference to the song U Can't Touch This by MC Hammer.