This is a Black plastic 2" wide at base with slight taper towards top, 1 1/8 tall. The inside has slot for LED so it can be lit during operation. The hole is half cut 1/4 standard size. See photos. This came from an Pioneer RX 740 Stereo but is the same size as many of the Pioneer and other brands of this period. It doesn't have to have the led but its a nice feature.

Overall in nice shape.

Will combine shipping on items purchased at same time. USA only. $1 per additional item.