A pair of unassuming brass knuckles. As long as you are not wearing armor or using a shield, these knuckledusters grant you a +2 bonus to history checks and a +2 on all damage rolls made for unarmed strikes on your turn. While attuned to these brass knuckles, you cannot wear any other magical items on your hands.

Notes: Bonus: Unarmed Attacks, Bonus: History, monk