This replacement knob features a spokes-of-a-wheel detail molded in dark brown Bakelite. It is used to replace missing or damaged control knobs on antique electronic cabinets. The unit features a 13/16" diameter and measures 3/4" in total height. It mounts onto a 13/16" half-round shaft, featuring a 5/8" deep recess that secures tightly in place via a built-in set screw.