Upgrade your audio equipment with these 20pcs console mixer slide fader knobs. Perfect for straight slide potentiometers on guitars and consoles, these knobs enhance volume and brightness control. Made from durable plastic, they come in grey, white, red, and yellow. With a total size of 24 x 11 x 10mm, they fit holes of 4 x 0.9mm. Simply pull out the old knob and replace it with the new one without needing tools. Note: This set includes only the knobs, not the potentiometer.