Dropped by Airut which require 92 Slayer to kill. Gloves are only dropped when on an Airut slayer task.
Tier 90 gloves for melee combat.
Razorback gauntlets will degrade to dust after 60,000 hits in combat. You can check the remaining percentage by using the right-click context menu. Razorback gauntlets cannot be repaired, and cannot be traded once they are equipped. They are the melee equivalent of celestial handwraps (magic) and ascension grips (ranged).