Genuine Fender 250K control pot featuring S-1 switching technology. Solid shaft design. Tone up and modify your favorite guitar or bass with an S-1 Switch from Fender. Originally featured as an upgrade to American and American Deluxe Series guitars and basses in 2003, the S-1 switch allows a multitude of tonal options for your instrument. Features four "stages" and can be wired into a variety of configurations (SPST, DPDT for a coil-tap, or 4PDT for a dual humbucking coil tap). Works well in conjunction with a Stratocaster 5-Position "Super" Switch (Fender p/n 0992251000). 250K solid shaft design. 3/8" diameter shaft. Accepts set screw mounting knobs only. Switch knob (p/n 0052970000), cap (p/n 0059272000), and coupling sleeve sold separately.