Shackle

The Shackle is a common equipable accessory dropped by Zombies. It gives you +1 Defense, allowing you to take a little less Damage from being hit. They are very useful early on in the game before a player is able to acquire decent armor or accessories. After you get any sort of armor, the player may not want to use Shackles anymore since it takes an accessories slot which may be better used by equipping something else.

Moreover, later on in the game, Shackles may not be worth it as much because other accessories, such as a Cobalt Shield or Obsidian Skull, not only provide +1 to Defense as well, but they also carry other beneficial effects. Any excess Shackles that you don't need (such as if you already have one equipped) can be sold to any vendor NPC.

Variations
All variations of the Shackle look the same as the basic one, and give the same basic +1 to Defense, and in addition each one gives an additional bonus to stats, thus as such carry a higher rarity rating.

Angry Shackle The Angry Shackle gives an additional +3% Damage. Tier 2 rarity item.

Armoured Shackle The Armoured Shackle gives an additional +3 Defense, for a total of +4 Defense. Tier 3 rarity item.

Brisk Shackle The Brisk Bhackle gives an additinal +1% Movement Speed.

Warding Shackle The Warding Shackle gives an additional +4 Defense, for a total of +5 Defense. Tier 3 rarity item.

Quick Shackle The Quick Shackle gives an additional +4% Movement Speed. Tier 3 rarity item.

Intrepid Shackle The Intrepid Shackle gives an additional +3% Melee Speed. Tier 2 rarity item.

Spiked Shackle The Spiked Shackle gives an additional +2% Damage. Tier 2 rarity item.

Arcane Shackle The Arcane Shackle gives an additional +20 Mana to your reserve. Tier 2 rarity item.

Rash Shackle The Rash Shackle gives the normal +1 Defense and also gives +2% Melee Speed. Tier 2 rarity item.

Violent Shackle The Violent Shackle gives the normal +1 Defense and also gives +4% Melee Speed. Tier 3 rarity item.

Guarding Shackle The Guardian Shackle gives the normal +1 Defense as well as an additional +2 Defense giving it a total of +3 Defense. Tier 2 rarity item.

Lucky Shackle The Lucky Shackle gives the normal +1 Defense and also gives +2% Critical Strike chance. Tier 2 rarity item.

Menacing Shackle The Menacing Shackle gives the normal +1 Defense as well as an additional +4% Damage. Tier 3 rarity item.

Precise Shackle The Precise Shackle gives the normal +1 Defense as well as an additional +1% Critical Chance. Tier 2 rarity item.

Fleeting Shackle The Fleeting Shackle gives the normal +1 Defense as well as an additional 2% Movement Speed. Tier 2 rarity item.