Flesh-Render Fang is the Level 3 Dragon Spear used by Volga in Hyrule Warriors and Hyrule Warriors Legends. It is described a exquisite spear carved from the bones of a Dragon and befitting its origins it has a Fire Elemental Attribute.
Flesh-Render Fang + is Volga's Level 4 weapon in Hyrule Warriors Legends. It is basically a stronger plus version of Volga's Level 3. Like all Level 4 weapons, it has the same design as the Level 3 weapon it is based on.