General description In-dash amplifier level control for volume adjustment, allowing you to adjust the amplifier gain while driving. This product is perfect for balancing the audio system to accommodate different music styles. Technical specifications Interface: 2 x Output; 2 x Input Distance between holes: approx. 4.5 cm Line length: about 18 cm Material: Plastic + metal Color: Black Measurement allowed error: +/- 1-3 cm Package Contents 3 x Volume Controller 6 x Screws