Arrow Insert from Black Eagle. Key features: Allows for installation of 5/16 screw in field tips. Provides additional protection to the front end of the shaft. Brass version compatible with screw weight inserts for increased customisation. Technical specifications: Material: Aluminium or Brass Weight: Alu: 14 grains Brass: 42 grains Compatibility: For Black Eagle: Carnivore, Outlaw, Zombie Slayer & Vintage Shafts