For each 3 Refine Levels of Jack the Knife:
Increases damage of Back Stab by 10%.
Increases damage of Fatal Menace by 5%.
_______________________
For each 3 Refine Levels of Platinum Dagger:
Increases Fire, Water, Magical Damage with Wind and Earth element by 5%.
Increases Attack Speed (decreases After Attack Delay by 2%).
_______________________
For each 3 Refine Levels of Rapid Fire:
Increases damage of Triangle Shot by 7%.
Increases Ranged Physical Damage by 2%.