? Definition knob: A common circular protrusion, disc or dial engraved with one or a series of marks on the edge that can be rotated or pushed out to initiate and manipulate or control something (such as an audio, effect).
? Likes 1083 knob belongs to plastic knob ,circular knob ,have 2 types shaft hole :6*18T or 6.4mm with screw. Also some color :black ,white ,transparent ,red ,blue ,brown ,green ,yellow ,cream ,purple and customized color .