The Bone Glove is an Expert Mode-exclusive item that is always obtained from the Treasure Bag dropped by Skeletron. It allows a player to throw two crossed Bones that can bounce off walls two times or pierce two enemies before being destroyed. It consumes one bone per throw and has a 33% chance to not consume any.
Its best Modifier is Unreal, a modifier exclusive to ranged weapons. In spite of this, however, the Bone Glove is unique in that it is a “throwing weapon”- so that means it receives throwing bonuses from Fossil Armor and Ninja Armor, and bonuses to ranged weapons such as the Ranger Emblem will not be applied to it.
If the Bone Glove hits an enemy right next to the player, the amount of damage dealt excludes the bones’ damage, only the Bone Glove’s base damage counts.