Keep all power systems organized Ideal applications: clamping rails, busbar, suitable for power systems such as camping vehicles, solar panels, cars, trucks, yachts, boats, etc. M8 Bulk Rails with 4 M8 Screws: The heavy duty bulk rails are equipped with 4 M8 screws, have multiple connection points for red positive pole and black negative pole with 5/16 inch holes, modular box design, removable for easy wiring configuration Highest quality materials and good conductivity: The high current collective rail is reinforced with fireproof ABS base and glass fiber reinforced nylon base, which provides excellent mechanical strength and durability; Stainless steel bolts and nuts provide better corrosion and rust resistance in salt water or corrosive environments. Design principle: The black car splitter is connected to the negative pole, the red is connected to the positive pole; the rated current of each screw is 62,5A, the rated current of the whole electrical block is 250A; the auxiliary terminal screw current is 20A. maximum voltage is 48 V DC Specification: Color: Black, Red Material: ABS zinc alloy brass Maximum voltage: 48 V DC Rated current of each pin: 62,5A Rated current of the whole electrical block: 250A Auxiliary Clamp Screw Current: 20A Size: 170*44mm Voltage: 12 V The package contains: 2x Power Distribution Blocks