Heavy Duty 400A 12-48V Tin-Plated Copper Block Bus Bar 8xM10(3/8″) Studs Independent Modular Positive Negative Ground Battery Junction Block Buss Bar for Solar System Marine Truck Boat. Installation:Our busbar is suitable for installation on any plane;Stainless steel screws and nuts have corrosion resistance and rust resistance;The anti slip sponge on the base enhances stability.