Bone Wrist

Bone Wrist, also known as Bone Armlets, is a recurring accessory in the series. It tends to grant bonuses to physical stats.

Final Fantasy VI
Bone Wrist is an accessory only found in the Advance remake, and only in the Dragons' Den, or by betting a Dueling Mask in the Coliseum. Only Umaro can equip it, and it provides +5 Vigor, Stamina, Speed, and Magic, +10 Defense, Magic Defense, Evade, and MBlock, +50% Vigor and HP, +25% to physical and magical damage, and makes attacks unblockable.

Final Fantasy IX
Bone Wrist is a mid-ranked Armlet that provides +13 Defense, +9 Magic Defense, +1 Strength, and increases the power of Earth-elemental attacks. It teaches the ability Add Status, and can be used by everyone except Steiner and Freya.

Final Fantasy Tactics Advance
Bone Armlets is the strongest glove in the game, and provides +3 Attack, +6 Defense, and +8 Magic Resistance.

Final Fantasy Tactics A2: Grimoire of the Rift
Bone Armlets is again the strongest glove in the game, and provides +2 Attack and Resistance as well as +5 Defense and Evasion. It teaches the ability Blink Counter.