It works only on Blades. It increases their damage by 10%. Since it is not a big improvement, it should be used with primary weapons that have strong firepower and that don't need attachments. It works best with Knife and Club (and their custom versions) that have low damage per hit. This attachment is best for Rusty, as he can only use Blades and this attachment can allow him to deal more damage with Blades.
- Only attachment in entire game that works only on secondary weapons. It works even for only one specific weapon type, Blades.