Product name: Car and ship bus bar box 300A Product material: nylon/glass fiber+stainless steel Rated voltage: DC 48V MAX connection amplifier: 300A Terminal Stud Size: 4x M8 (5/16") Product features: 1. Modular box design, easy for wiring configuration 2. Glass fiber reinforced nylon base and shell ensure mechanical strength and durability 3. The box is detachable for barrier-free wiring, and it reasonably stores the wires inside the car and ship Product use: M8 in the middle is connected to the negative pole of the device, and M8 at both ends is connected to the negative pole of the battery; collect small currents from various devices, such as 3A 5A 10A 8A... Integrate a thick line to sink a large current within 300A to the battery. Product function: play the role of storing a negative wire harness in automobiles, ships and yachts, gather the negative wires together, and the box storage is more beautiful. Heavy duty modular design busbar box with 4 terminals feature Highest rated current busbar (300A) with M8 binding posts (also available for M10) Modular box design for easy wiring configuration Fiberglass reinforced nylon base and shell ensure excellent mechanical strength and durability Removable window for unobstructed wiring Empty writing space on top to easily label each branch Specification Case Back Material | Nylon, Fiberglass Reinforced Bus Material | Brass, Nickel Plated Size: 5/6 " Weight: 450g Color: black, red, red Material: Nylon+glass fiber enhancement Quantity: 1PCS Packaging package: 1 car ship remitting line row box