Items with Color: black, Function: Concentric, Material: Plastic, Shaft: 6mm
			
					Concentric switches have a double shaft system. You can have two separate switch functions within one switch. Choose concentric knobs which fit to the shafts of the concentric switches which often is 6mm or 1/4" and for the inner shaft 1/8".
Concentric functions can be found on vintage studio gear like Neve consoles where you can select the frequency with the outer ring and the boost/ attenuation with the inner knob part.
		 
	
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