The 500K value is typically used with Teles with humbuckers or other hum cancelling pickups. Fits USA Fender Telecasters from the early '50s to the present. Solid 1/4" shaft set screw knobs. Same pot used on some USA Vintage Series and USA Custom Shop Teles with humbuckers, Tele Custom, Tele Deluxe, Tele Thinline, 'heavy metal' Strats, etc. Also a good choice for Rickenbacker guitar and basses, Hamer guitars, guitar amps, even radio repairs. The same 500K audio taper solid shaft pot can be used for either Volume or Tone control. Fits nearly all Fender instruments (U.S. and Mexico) requiring a solid-shaft potentiometer. Brand New. Genuine Fender 0990835000. UPC 717669511890.