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; Split Shaft Diameter: Approx. 6mm/ 0.24 inch.- B250K 18mm Split Shaft Guitar Pots Potentiometer Audio Tone Switch Control. - Split shaft with coarse knurling. - Coarse knurled shaft fits most control knobs. - audio-potentiometers, perfect for replacing and upgradingtone controls.