Q: Could you kindly let me know the physical dimensions of 'SKU: knob-CKB003-BK-3ps' in 'Black'? I would like to know the overall diameter of each knob as well as the overall height to make sure the fitment would work well with my guitar. Could you please let me know what the overall outside diameter of this knob is as well?
A: Thank you for your inquiry. The inner diameter of this knob is 6mm, and the overall height is approximately 18mm. The overall outside diameter of the knob is 18mm.

When we modify or build a guitar, its knobs are something we don’t want to ignore because knobs control the volume and tone. To choose the right knobs for our guitar, we have to consider several factors including compatibility, material and construction, style, functions, and budget.


One of the most important considerations is ensuring that the knob is compatible with your guitar. Measure the diameter of the existing knob or the control shaft on your instrument to determine the appropriate size. It is crucial to choose a knob with the right inner diameter to fit securely onto the potentiometer.

Material and Construction

Guitar knobs are available in various materials such as plastic, metal, or wood. Each material has its unique characteristics, affecting both its appearance and functionality. Plastic knobs are common and affordable, while metal knobs offer durability and a premium feel. Wood knobs can provide a vintage or natural look. Consider the overall build quality to ensure longevity and reliable performance.


Guitar knobs come in various colors, finishes, and designs. Consider the overall style and appearance of your guitar. You may want to match the knob color to the body or pickguard or choose a contrasting color for visual appeal. Additionally, some knobs feature decorative elements like patterns or engraved markings, allowing you to personalize your instrument's look.


Different knobs offer varying levels of control and precision. Some knobs have a smooth rotation, while others provide notched positions for more accurate adjustments. Consider the level of control you desire for volume, tone, or other functions. Additionally, illuminated or indicator knobs can be helpful for visibility on stage or in low-light environments.


Set a budget based on your preferences and requirements. Guitar knobs are available at various price points, depending on the materials used and the level of craftsmanship. It is important to strike a balance between quality and affordability, ensuring you choose a knob that meets your needs without breaking the bank.