Premium Quality: battery bus bar base is made of hard plastic, the circuit board is made of copper, stainless steel terminal, PC protective sleeve; Features: 12v battery bus bar includes 6 x M6 (1/4 ") terminals, and its nuts are designed as washers; This battery distribution block can handle voltage Max 300V AC, 48V DC, and continous amperage Max 130A AC, 150A DC; If you have any questions, please contact us by email and we will reply you within 24 hours Premium Quality: battery bus bar base is made of hard plastic, the circuit board is made of copper, stainless steel terminal, PC protective sleeve Features: 12v battery bus bar includes 6 x M6 (1/4 ") terminals, and its nuts are designed as washers Wide Application: The power distribution block uses copper plates and stainless steel terminals as conductors, which enables the battery distribution block to work in extreme environment, suitable for automotive, marine, boat, car, etc Package Include: Each battery bus bar 12v includes two power bus bars in the package - one positive bus bar and one ground bus bar Current: This battery distribution block can handle voltage Max 300V AC, 48V DC, and continous amperage Max 130A AC, 150A DC