Car Audio holder:for Car audio modification parts, power amplifier or subwoofer installation, protect .. Distribution Block: Input 3x 0GA, Output 4x 4GA Material: Made of brass and zinc alloy, with removable plastic protective shell, durable and solid. Automatic Protection: car holder prevent excessive current, avoid overheating of the line, and automatically cut off when the current is too large. Application: cars, Boats, yachts, ships, RV and other vehicles lines of electrical for power splitting. Specification: Wiring hole: 3x0Ga (input) 4x4ga (output) Item number: Copper multifunctional seat Material: Brass Alloy Weight: about 211g Size Chart: 7.8cmx4.9cmx3.2cm/3.07inchx1.93inchx1.26inch Package Includes: 1 Piece Power Distribution Block Holder Note: 1. Please allow slightly error due to manual measurement. 2. Due to between different monitors, the picture may not reflect the actual the item. 3. Wish wonderful online shopping!