Solid 1/4" shaft for standard set screw knobs. Brand New. Genuine Fender 0037598000. UPC 717669107468. Features 10K audio taper snap-in-style potentiometer 1/4" solid-shaft design Accepts set-screw mounting knobs Used in '65 Twin®, '65 Super Reverb® and Custom Vibrasonic amplifiers (1992-present)
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