6 Pieces Audio Volume Switch Cap Knob Switch for Speakers Musical Instrument white.: Made of durable material sturdy and enduring strong against breakage or bending serving you for a long time and the surfaces of tone knobs are smooth not easy to scratch your hands you can use them with confidence.The knobs are printed with numbers clear and legible.Top hat knobs have a wide range of applications; enjoy your music as you can.Potentiometer knob Height: 2cm/0.79inch; Diameter: 2.4cm/0.94inch.Audio volume knob cap is suitable for Speakers and Audio. Great parts for your broken dirty or old Volume control knob.Top Hat Volume Speed Control Knobs Switch. Speaker knob Audio volume knob switch. Audio volume switch cap Potentiometer Knob. Volume Control Knob Audio knob Guitar Knob. Rotary Adjustable Audio knob Volume Control.