●Distribution Block-High Performance 2 Way Copper Car Audio Power/Ground Distribution Block ●1-0/2/4 Gauge In,2-4/8 Gauge AWG Out ●Solid Brass,Gold-Plated for Corrosion Resistance ●The Cover Is Made Of High Strength, Nonperishable Industrial-grade Plastic ●Applicable to auto, boat or other vehicles, protect your audio system.