Armor Ring L-2
"Sword damage -2, Damage taken -2"
The Ring is located within a cave on Goron Mountain, just west of Mt. Cucco. Two screens south of Biggoron, Link can enter a cave. Do so and then climb the staircase to get to the second floor. At the top-right portion of this screen there is a treasure chest with two cracked blocks. Use Roc's Cape to fly on over to this platform. Place a Bomb to blowup the crack blocks and then open the treasure chest to get the Seed Ring that becomes Armor Ring L-2.
The Armor Ring L-2 is the opposite of the Power Ring L-2. When worn it will lower Link's sword damage by two units and also lowers the damage he takes by two units. It is useful if you aren't too concerned with battling enemies and are quickly running passed them.