Replacement colored amplifier jewel for ultimate amp customization Introduced on tweed-era Fender® amplifiers Used on HOT ROD DELUXE™, HOT ROD DEVILLE™, Blues Deluxe™, Blues DeVille™, Blues Junior™, PRO JUNIOR™, Custom VIBROLUX Reverb®, Super-Sonic™ Series, Vintage Modified series, Vintage Reissue series, '57 Twin®, '57 Deluxe™, '59 Bassman®, '94 Twin, Vibrasonic, '57 Band-Master®, VIBRO-KING® and Tremolux™ amplifiers Fits most vintage and modern amplifiers