Guitar Amp Potentiometer. Audio/Log pots are typically used for volume control, and Linear pots are typically used for effects. 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