With their traditional retro vibe and a sleek aesthetic that livens up the look of any vintage-style amplifier, Fender's complete set of six chicken head-style knobs are perfect for dialing in precise and powerful classic Fender tone. Set screw fixing, fits standard 1/4" diameter solid shaft pots on vintage and modern amplifiers and guitars. Introduced on tweed-era Fender amplifiers this knob also fits '59 Bassman®, Blues Deluxe™, Blues Deville™, Hot Rod series, Prosonic™, '57 Twin®, '57 Band-Master®, EC Series, Bassman TV series and most other amplifiers. Brand New. Genuine Fender 0073688049. UPC 885978452217.