【Excellent Material】: Unlike most products on the market, our wiring terminals are made of high quality 304 stainless steel, which is stronger and more wear-resistant. Our headers are made of flame retardant plastic, which is less susceptible to extreme temperatures. 【Specifications】: The bolt size of our battery terminal block is M8: M8. Suitable for 12/48V DC voltage. Maximum Amperage per Circuit: Determined by the connected wires. Maximum operating voltage DC48V, positive bus and ground bus, red and black battery distribution blocks. 【Function】: Bus bar studs are used to connect high-power cables for one or more connections. Red and black colors make wiring simple and straightforward, with clear color coding for easy wiring. 【Easy to Use】: Includes 4 M8 terminals, 2 red, 2 black and 8 stainless steel self-tapping nails, two mounting holes for easy installation in any orientation. Red and black colors make wiring easy, the color code is clear, the mechanical strength and durability