This is very unconventional and original design with cutaways opening. This guitar knob will work for volume and tone controls on your guitar. It will fit any potentiometer up to1/4” diameter. It is designed to self tap with a 6-32 set screw, if the part is ordered in plastic. If the part is made out of metal you may need a 6-32 tap. This is a great original design that will be the envy of your friends. The functionality is not sacrificed over design.