3 Way Power Distribution Block 1x 0 Gauge in 3X 4 Gauge Out Amp Power Distribution Ground Distributor Connecting Block for Car 1 x 0GA IN, 3 x 4GA OUT: Input accepts 1/0 or 4 gauge wire, Outputs accepts 4 or 8 gauge wire, Come with 2 Pieces car amplifier power distribution, make wiring your system easier with high quality distribution blocks. 3-Way Connection: ideal for multi car amp systems, nickle plated internal materials eliminates the possibility of corrosion, rust, oxidation, or premature wear on speaker wire connection points. Deep Wire Recesses: VonSom distribution blocks with deep recesses to protect wiring from being left exposed to the elements or other objects that might cause your system to malfuction. Screw-down Wire Clamps: Allen head tops and oversized set screws with small serrated ends guarantee a strong consistent connection that instils confince against loose wires. Easy to Install: Screw-down wire clamps, impact resistant snap-on plastic cover, 100% solid brass construction for corrosion resistance, ensures you get the longevity out of your system that you expect. Size: 60 x 50 x 35mm Removable clear plastic protective shell. Works on cars, boats, RV s and more for power splitting. Offers complete protection for your car audio system Designed and engineered for high performance by the best industry experts