Fangrui Product Details High Quality: Premium Brass Contact Plate For Better Current Fer, Nylon Base Provides Good Insulation, 4 Stainless Steel Studs Suitable For A Variety Of Applications. Organized: The Power Distribution Block Can Help You Organize Wiring, Bring The Harness Together And Reasonably Store The Wiring Inside The Vehicle And Boat. With Cover: Includes A Detachable Cover To Protect Connections From Damage And Corrosion. Safety:base Flame-retardant Material Plastic, Escorts Your Safety. The Power Distribution Block Can Handle 250 Amps Continuous At A Maximum Of 300v Ac Or 48v Dc. The 3.5mm Copper Busbar Is Thicker Than Other 2.0mm Brass Busbars, And Can Actually Withstand 250a Current. Screws: 6 X #8, Binding Posts: 4 X 3/8inch (m10). All Of Our Busbar Terminals Are Made Of 304 Stainless Steel, Which Is Less Prone To Rust And Has A Longer Service Life Than Other Bus Bar Iron Terminals. The Special Fixing Method Of Our Marine Busbar And Base Can Withstand Large Torque, The Whole Busbar Is More Stable, And The Bus