Original Fender® snap-in potentiometer with 1/4" solid shaft. 250KA log/audio. Accepts set screw mounting knobs. Used in Blues Deluxe™/DeVille™, Hot Rod Deluxe™/DeVille™, Bassman® 300, Pro Tube Concert™, Pro Tube Twin®, Super Reverb®, Princeton® Recording Amp, and Bassman® TV Series amplifiers manufactured from 1994-Present.