ENHANCED NYLON MATERIAL: The quality of the product depends on the manufacture of its material. These bases are made of fiberglass nylon molds, which are stronger than nylon or plastic bases, less affected by extreme temperatures and more resistant to chemicals. Protect your investment: 1/4\" stainless steel double augers, lock washers and nuts are strong and do not rust.The base is made of flame retardant plastic to ensure your safety and excellent mechanical resistance and durability. BASIC PARAMETERS: Power Distribution Block The maximum operating voltage is 48V DC and the maximum AMP for each circuit determined by the connected wires.Red is positive, black is negative. WIDE APPLICATION: Battery cable terminals are suitable for special vehicles or replaced batteries.It is suitable for 12848V buses, boats, trucks, trailers, boats, RVs and other industrial equipment. Package includes 1 black M6 (1/4") cable column; 4 surface screws are fixed and two installation holes are installed for any direction.