Premium aluminum potentiometer knob (40*17mm) with precision-machined grooves for enhanced grip and durability. Anodized finish resists corrosion and maintains sleek appearance under heavy use. Ideal for audio equipment, industrial controls, and DIY electronics projects. Solid brass insert ensures secure mounting and smooth rotation. Durable construction withstands frequent adjustments in professional settings. Mirror-polished edges with laser-etched calibration marks for accurate positioning. Weighted design provides superior tactile feedback during operation. Perfect replacement part for mixers, amplifiers, and laboratory instruments.