Features: 1.EASY INSTALLATION: The cover of this bus bar 12v marine will allow 180 wire lug installation and can meet variety kinds of installation methods of end terminals. 2.FINE WORKMANSHIP: Nickel plated brass contact plate for optimal current transfer and weather resistance. Glass filled nylon base for superior insulation and strength. 3.STRONG AND RELIABLE: Metal hardware for extreme conditions including use in marine environments, detachable cover included to defend connections. 4.WIDE APPLICATION: M8 large current 4 studs power distribution block is widely used in power systems such as cars, RVs, ships, and yachts. 5.EASY TO USE: The bus bar is lightweight and small that you can easily stored them, which will not occupying much space. Specification: Item Type: Power Distribution Block Product Material: ABS, Zinc Alloy, Brass, Nylon Maximum Voltage: DC48V Fuse Current: 300A Stud Specification: M8 x 4 (M8 size, 5/16in) Product Function: Gather the wiring harnesses together and reasonably store the wires inside the vehicle and ship Applicable Scope: In power systems such as cars, RVs, ships, and yachts