Features: Premium solid aluminum potentiometer knob ensures outstanding durability and precise sound control, ideal for high end sound amplifiers and professional sound systems. machined with not slip textured surfaces for easy grip, featuring universal compatibility with standard amplifiers shafts for tool without installation. designs for audiophiles, studio engineers, and electronics enthusiasts search reliable, long service tuning component. Perfect for home theaters, recording studios, or stage equipment requiring frequent, smooth adjustments in humid or high usage environment. Elevates your devices aesthetics with this , corrosion resistant aluminum knob that combines industrial functionality with modern design. Specifications: Component : All Aluminum Process: High-end accuracy machining Size: about 3.8x3.8x2cm/1.5x1.5x0.8inch Package Includes: 1xVolume Control Knob note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.