ITEM NAME:25*22Mm Aluminum Volume Control Knob For Cd Amplifier Dac Speaker Potentiome ME Product Description Brand New Audio Volume Control Knob Quantity:1PC Material:Solid Aluminum CNC Machined Color:Silver Anodized Sand Blasting Diameter of Bottom:25mm Diameter of handle: 16mm Height:22mm Shaft Hole:6mm It's suitable for CD Player,Tube Amplifier,DAC,Turntable,etc.It's suitable for CD Player,Tube Amplifier,DAC,Turntable,etc. Material:Solid Aluminum CNC Machined.