Alpha Potentiometer, 500K Linear Guitar Amp Potentiometer. 500KL / 500K Linear / 500KB / 500,000 ohms Fits 3/8" Hole 1/4" Solid Shaft 24mm Body, Solder Lugs, 1/2 Watt Rated, 300 Rotation, 250VDC Rated, Carbon Composition Comes With Hex Nut and x2 Washers