1Wiring Hole Type: Professionally manufactured distribution block, 0GA 1 in 2 Out, easier to wiring your system and keep your wiring clean and secure. 2High Conductivity: The power distribution block is made of zinc alloy, chrome plated, high conductivity, improving the security of your connections. 3Reliable Set Screws: Oversized set screws with small serrated ends ensure a safe and consistent connection and improve the performance against loose wires. 4Deep Recesses: Distribution block with deep recesses is designed to protect wiring from exposure to components or other objects that could cause system to malfuction. 5Universal Application: Power distributor connecting block is universal for cars, trucks, boats, RVs, etc., comes with a clear cover to prevent from dust and water.