High Quality: Premium brass contact plate for better current transfer, 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