Riverstone Audio - Pair (2 PCS, Red) Potentiometer Knobs - For 6 mm Diameter Shaft - Solid Aluminum- 25mm dia.x15mm height, Volume Control Knob, Amplifier, Electric Guitar, Finish RED, 6 mm shaft Two high-quality anodized potentiometer knobs - solid aluminum - CNC machined. Fit 6 mm shaft diameter. Red anodized surface finish. For similar knobs with different color (blue, gold and black) or for larger quantities (4 knobs), please click on "Riverstone Audio" at the top of this page to view additional choices. We are perfectionists when it comes to audio products. All knobs sold by Riverstone Audio are meticulously inspected to ensure they are free of scratches and surface defects and packed in foam-lined boxes to prevent damage during shipping. RED COLOR: 25 mm diameter x 15.5 mm height Will fit potentiometers with 6.0 mm shaft diameter - not suitable for use with 1/4 inch (6.35 mm) diameter shafts **Please Note: The color of anodized surfaces can vary slightly with different light sources (LED, CFL, incandescent or natural light) and viewing angle. The pictures of the knobs were taken in natural light. For an artificial light source, the color may vary with the CRI (color rendering index) of the light source. The interaction of quality anodized surfaces with light source and viewing angle is one of the beauties of anodized surfaces and why our knobs are anodized, not painted.**