This is Husqvarna's 8″ Scarlett Brushcutter Blade 200-22T #596279601
Blade Type Brush Cutter Blade
This blade works on the following Husqvarna Brushcutters:
322R, 323R, 324RX, 325R, 326RX, 232R (After 8/02)
335RX, 343FR, 345R, 345RX, 355FX,
545FX, 555FX