Ibanez EQ Knobs. These are the 1st series knobs as used on 2622, 2700, AR500, MC400/500, ST200/300 etc through July 1979 on the left and 2nd series EQ knobs used after that date on the right. Fit smooth shaft potentiometers and are held in place with two allen screws just like the originals. The price is per knob.