Fender Snapin Control 100KB Pot Fender 100K B Taper Snap-In D Shaft Potentiometer - Fender 1 Year Limited Warranty 100K B-taper (linear) snap-in-style potentiometer "D" shaft design Accepts push-on-style amplifier knobs Used in Acoustasonic Jr./30, JAM, Automatic GT/SE, Bassman 60, and Princeton 65 DSP/650 amplifiers (1990-2005)