Easy to Adjust and Operate: These knobs are designed for effortless adjustment and user friendly operate, making them ideal for various applications requiring control Stylish Design: Featuring a diverse range of appearances, these knobs not only enhance the aesthetic of your equipment but also ensure long term durability Material: Crafted from premium pp material, these knobs offer reliable performance and resistance to wear and tear over time. Wide Application: This volume control knob is suitable for all kinds of electronic devices, such as electric guitars, dimmers, potentiometers, etc Package Included: Each purchase includes a set of 30 knobs, providing ample quantity for multiple projects Specification: Material: PP Size Chart: HxD:1.9cmx1.4cm/0.75inchx0.55inch Round Hole:6.4mm/0.25inch Package Includes: 30Potentiometer Control Knobs Note: Please allow slight dimension difference due to different manual measurement.