Striking Attack (打撃力), often listed as S-ATK, is a character statistic in Phantasy Star Online 2. S-ATK is used to calculate almost all melee damage (File:Jet Boots PSO2 icon.png s are an exception). S-ATK is used as a requirement for equipping various weapons, primarily File:Sword PSO2 icon.png s, File:Wired lances PSO2 icon.png s, File:Partisan PSO2 icon.png s, File:Twin daggers PSO2 icon.png s, File:Double saber PSO2 icon.png s, File:Knuckles PSO2 icon.png Knuckles, File:Dual Blade PSO2 icon.png s, and certain File:Katana PSO2 icon.png s, as well as for using striking Photon Art discs. Only S-ATK from class levels, passive skills, and an equipped Mag contribute towards the equipment conditions.