An integral part of the Delta Tone system used on Fender American Series electric guitars, the "No-Load" potentiometer functions as a normal tone control from 1 to 9. At 10, however, the tone control is taken out of the circuit for increased output and overall tonal response. The 250K control is typically associated with single-coil pickups. 3/8" potentiometer shaft. Solid shaft design. Works with set screw mounting knobs. Mounting nut, washer, and .022mf 250V capacitor included.