Check the listing for details. Car RCA Level Remote Volume Knob LC-1 Auto Amplifier Volume Control Knob. Condition: New. Listed at 7.11 USD. Car RCA Level Remote Volume Knob LC-1 Auto Amplifier Volume Control Knob brand new and Material: Plastic Color: Black Color: Black Specification: Model: LC-1 : 2*RCA Output 2*RCA Input Total Length: 27.5cm（Approx） The distance between the mounting holes: 4.4cm(Approx) Fitment: Suitable for most of Features: 4 gold plated RCA's Mount in or under the Mount Amplifier Level Control for Volume Adjustment Can Adjust the Amplifier While Driving Perfect for Balancing the System to Change Music Styles Simple in and out , no additional wiring needed Made from materials and metal for optimal signal transfer Comes with Mounting Bracket Quantity:1 set Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!