performance and protection: This car audio power and ground distribution block is built from materials to shield your car audio system and simplify wiring, helping deliver stable and reliable operation. durability: Features screwdown wire clamps and an impactresistant snapon plastic cover. The solid construction and corrosion resistance ensure dependable performance in a range of environments. Flexible compatibility: One input hole supports 0/2/4 gauge input and four output holes support 4/8/10 gauge output, providing adaptable wiring options for different audio setups. Comprehensive safety protection: Includes a protective cover that shields exposed contacts after installation, reducing dust intrusion and the risk of accidental contact for enhanced safety. Key specifications Input: 1 input hole (0/2/4 gauge) Outputs: 4 output holes (4/8/10 gauge) Material: quality construction Clamps: screwdown wire clamps Cover: impactresistant snapon plastic with corrosion resistance Safety: protective cover against dust and accidental contact Use scenarios Front underdash installation: distribute power from the battery to multiple amplifiers (using 0/2/4 gauge input and 4/8/10 gauge outputs) while keeping wiring organized and protected. Rear trunk/second row setup: power and ground distribution to subwoofers and additional amplifiers, enabling a clean and secure wiring harness with builtin safety features. Harsh environments within vehicles: the corrosionresistant design and protective cover provide reliable performance in vehicles exposed to dust, humidity, or variable temperatures, helping maintain system integrity over time.