Repair your rig with top-quality potentiometers used especially for Fender amplifiers. This is a genuine Fender 250K audio taper potentiometer is the snap-in type. It is a 1/4" solid shaft design and it accepts set screw mounting knobs. Includes mounting nut and washer. Used as a "Bass" control in '65 Twin Reverb®, '65 Deluxe Reverb®, and Custom Vibrasonic amplifiers manufactured from 1993 to the present day.