Product Description: Advantages: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Made of aluminium material,good quality and durable.4.Suitable for potentiometer,HIFI speaker,amplifier,car speaker volume control.5.Wonderful replacement for your Potentiometer Volume ControlSpecifications:Material:Aluminum + PlasticColor:BlackSize:1.25x1.1x0.6cm/0.49x0.43x0.23Inch(LxWxH)Weight:4g Package include:2 x Precision Knobs Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.