The Steel Glove

 is quite simply a steel plate glove worn on the left hand. This glove was made and used by Nelthro Kanir when he lived in Kaniros, where it's primary use was to grasp at the weakest points of the Nemer race, their tails. After the war ended Nelthro put the glove away until it somehow ended up in the posession of Nait Nelthar

Trivia

 * This glove can quite literally be used to beat a dragon to death.