Made from ABS material for durability and heat resistance in automotive environments. Kit contents: two 0 GA to 4 GA adapters; 4 GA to 8 GA conversion heads; all installation hardware for longlasting use; includes hex wrenches and spare screws. Function and compatibility: distribution block designed to manage power wiring for performance sound systems; supports 0 GA to 4 GA and 4 GA to 8 GA conductor sizes. Key benefits: secure, efficient connections for powerful audio setups; helps organize and simplify wiring with a complete, readytouse solution. Suitability: suitable for car audio enthusiasts and professionals to or upgrade car or motorcycle sound systems precisely and easily. Practical use scenarios: Installing a power amplifier in a car to ensure clean power distribution. Upgrading a motorcycle audio system with organized, reliable wiring. Using in a or install bay to prepare a distribution block for multiple amplifiers.