Potentiometer knob is an important accessory for connecting potentiometers,fit for 6mm D type Shaft and can be used for electric guitar, bass, audio,amplifiers,volume control, etc. Potentiometer Control Knob ,is in size of:Height:20mm(0.78 inch);Outer diameter:12mm(0.47 inch);Inner diameter:6mm(0.23 inch);Color:Black White;Material:ABS;Button rotation degree:180 degrees;In the package of: 20 x Potentiometer Control Knob It is made of ABS material,which has high reliability and durability. Button beautiful appearance, small size, easy installation, suitable for a variety of different electronic equipment and occasions. Steps of using:1. Confirm the potentiometer model; 2. Insert the potentiometer knob cap into the top of the potentiometer knob and rotate gently in accordance with the direction to confirm whether the knob is firm; 3. By rotating potentiometer knob cap, realize the adjustment of sound effect. Notes:In the use of potentiometer knob need to pay attention to choose the appropriate model and size, confirm the direction and position, gentle and smooth operation, prevent water and dirt. ASIN B0C6QT34SJ Color Black,White Shape Round Brand Name MECCANIXITY Style Name Knobs Unit Count 1.0 Count Handle Type Knob Finish Types Painted Manufacturer MECCANIXITY Model Number mea221111ee0407 Material Type Acrylonitrile Butadiene Styrene (ABS) Exterior Finish White Handle Material Acrylonitrile Butadiene Styrene Number of Items 20 Additional Features Adjustable Included Components Knob Manufacturer Part Number mea221111ee0407 Handle Attachment Mechanism Press-fit/Friction-fit