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Boss Style Knob - 1/4" Smooth Shaft (45mm OD)

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* UPDATE 2021: New manufacturer --> Big increase in quality! *

Do you need a big knob? Like, a really, really big knob? One with a shiny mirror cap that attracts the eye like a 1962 Shelby Cobra pulling up at the stoplight and revving it's straight-six engine? Yeah, this knob is "boss" like that.

Get the classic fluted Boss-style knob in a commanding 45mm outer diameter. The mirror cap provides shine, and a brass cup insert with two flat-head set screws securely hold it to a 1/4" smooth shaft potentiometer.

The Specs:

Boss style knob

Plastic with indicator

For 1/4" (6.4mm) smooth shaft pots

20mm (.79") tall

45mm (1 3/4") outer diameter at the skirt

Note: We've got four different sizes of classic fluted Boss-style knobs, from small (20mm) to extra-large (45mm). Check out the measurements below for a size comparison.

Small: 20mm x 11mm

Medium: 27mm x 16mm

Large: 33mm x 16mm

Extra-large: 45mm x 20.25mm


Tip: The term "Boss" refers to the aesthetic design of this knob, with the mirror cap inset into a plastic knob shell. A Boss-style knob will not automatically fit all Boss pedals. The right fit depends on the shaft size of the knob's potentiometer. Read this post to figure out what kind of knob you need: