1. Modular box design for easy wiring configuration 2. Glass fiber reinforced nylon base and shell high mechanical strength and durability 3. is detachable for -free wiring, which reasonably accommodates the wires inside the vehicle and 4. Use: The middle M8 is connected to the negative pole of the device, and the M8 at both ends is connected to the negative pole of the battery; small currents from each device, such as 3A 5A 10A 8A... Integrate a thick line to sink a current within 300A battery. 5. Function: Play a role of storage of a negative wire harness in cars, ships and yachts, gather the wires of the negative poles together, and storage is more beautiful. Description Name: Red Bus Bar Box 300A M8 Stud Terminal bolt size: 4x M8 (5/16inch) Maximum voltage: DC 48V Maximum connection amplifier: 300A Colour:Red Material:Nylon/glass fiber+stainless steel+copper Package Contents: 1 * busbar box 4 * screw Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.