Oh say can you see By the knob's early light... Sorry - we thought that was clever.  And while it wasn't really, this potentiometer knob definitely is.  It's a 'soft touch' T18 knob that works great with our Panel Mount potentiometers.The knob is designed to set directly on the potentiometer's ridges so it's an easy & secure fit. It has a nice feel, with a rubbery grip, tweaking it is quite fulfilling This is the Red version and it has a nice deep color on the inside with a striking red line on the outside for great visibility with whatever you're making.