1, Heavy Duty M10 Stud Terminal Bus Bars. Red (Positive) & Black (Ground), Max Voltage 48V DC 2, Max Amperage: 250 Amps at 12V DC per connection 3, Heavy Duty Nickel Plated Brass Plate, Durable, Support up to 250A Continuous Current 4, Stud Terminal: 2x M10 Studs, Made of 304 Stainless Steel, Corrosion Resistant 5, Protective Cover: Each bus bar with protective cover. The cover is made of heavy duty polycarbonate plastic, has excellent strength and durability, prevents short circuits and is safer. 6, Wide Application: 250A bus bars are easy to mount and terminate multiple cables safely at the source, keep wiring neat, protect circuits. Suitable for car, caravan, boat, yacht, solar system, etc. 7, Package: 1x Dual M10 Studs Positive 12 Volt Bus Bar with Cover (Red), 1x Dual M10 Studs Ground 12 Volt Bus Bar with Cover (Black). 8, Easy Installation: Surface Screw Fixed Mounting