Features: 1. EASY INSTALLATION: The cover of this 12V marine bus bar allows 180-degree wire lug installation and accommodates various terminal connection methods. 2. FINE WORKMANSHIP: Nickel-plated brass contact plate ensures optimal current transfer and weather resistance. Glass-filled nylon base provides superior insulation and strength. 3. STRONG AND RELIABLE: Durable metal hardware designed for extreme conditions, including marine environments. Detachable cover helps protect connections. 4. WIDE APPLICATION: M8 high-current 4-stud power distribution block suitable for use in cars, RVs, boats, and yachts. 5. EASY TO USE: Compact and lightweight design allows for easy storage and saves space. Specification: Item Type: Power Distribution Block Product Material: ABS, Zinc Alloy, Brass, Nylon Maximum Voltage: DC 48V Fuse Current: 300A Stud Specification: M8 x 4 (M8 size, 5/16 in) Product Function: Organizes wiring harnesses and efficiently manages wires within vehicles and marine vessels Applicable Scope: Power systems in cars, RVs, boats, and yachts