The essential part of the Delta Tone™ system in the Fender American series electric guitar is this 250K "no-load" pot. Control normal tones from 1 to 9. When 10 is reached, the tone control is disconnected from the circuit, which increases output and overall tone response. Fits most American and Mexican instruments that require a 3/8" split shaft pot. For use with push on control knobs (no set screws) Mounting hardware and .022mf 250V capacitor included.