One Genuine Ernie Ball CTS 250K Solid Shaft Audio Taper Pot For Fender Telecaster and other Fine Electric Instruments. CTS is the traditional choice for volume and tone control pots in classic Teles, basses, etc. Fits USA instruments from the '50s to the present exactly. Proper 250K audio taper, solid aluminum .250" shaft for set screw knobs. UPC 749699163824.