25K B taper snap-in style potentiometer. 1/4" shaft. Designed to accept set screw mounting knobs. Includes nut and mounting washer. Used primarily as reverb or middle controls on Blues Deluxe/DeVille, '94 Twin, Bassman 300, Pro Tube Twin, Pro Tube Concert, Hot Rod Deluxe/DeVille, and Bassman TV Series amplifiers manufactured from '94-Present. • MFSKU 0041510000 • UPC 717669107697