Enchanted diamond bolts have an Armour Piercing enchantment which increases the max hit by 15% and ignores your opponents defence and your own accuracy for the hit it activates on. A tinkling sound can be heard when this activates. If the player has completed the hard Kandarin Diary, there is a 10% increase of the likelihood that the special effect of an enchanted bolt will occur, giving enchanted diamond bolts an overall 11% chance of the special effect activating. This effect is always active regardless if the headgear is equipped or not.