DescriptionThe item is Guitar Amp Potentiometer. Audio/Log pots are typically used for volume control, and Linear pots are typically used for effects. B250K-ohm control pot, split shaft with coarse knurling, fits most control knobs.Besides, nice potentiometers for chioce.Features- Color: Chrome. - Material: Plastic, metal. - Shaft Length: Approx.18mm/ 0.7 inch; Shaft Diameter: Approx. 6mm/ 0.24 inch.- Full Length: Approx. 27.5mm. - Shaft Thread Diameter: Approx. 7mm. - Base Diameter: Approx.16.5mm. - Full resistance :250 K ohms.- Guitar Potentiometers B250K Split Long Shaft Pots Audio Tone Switch Control. - audio-potentiometers, perfect for replacing andupgradingtone controls. - Coarse knurled shaft fits most control knobs.