Used Boss BF-2 FLANGER Guitar Effects Pedal, Effects | A Flash Flood of Gear" alt="1981 Boss BF-2 Flanger (Black Label) Purple > Effects | A Flash Flood of Gear" />1981 Boss BF-2 Flanger (Black Label) Purple > Effects | A Flash Flood of Gear,Boss Flanger BF-2 Japan 1980-1984 Black Label - Rock Stock Stores,BOSS BF-2 Analog Flanger 1981 Vintage Guitar Pedal Made in Japan Silver screw,NPD - Boss Flanger BF-2 (1994) : r/guitarpedals