Features: Highest amperage rated bus bar (300A) with M8 terminal studs Module box design for easy wiring configurations Glass Fiber reinforced Nylon base and enclosure ensures great mechanical strength and durability Removable windows for unobstructed wiring Blank write-on space on the top allows easy labeling for each branch Product usage: 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 are collected from each device, such as 3A 5A 10A 8A... Integrate a thick wire to collect a current within the range of 300A. to the battery. Product function: It plays the role of storing a negative wire harness in cars, ships and yachts. It brings the negative wires together to make storage more beautiful. Specification: Max Operating Voltage: DC 48V Max Continuous Amp: 300A Terminal Stud Size: 4x M8 (5/16inch) Product role: The wire harness together, reasonable storage of car and boat inside Applicable scope: Automobile, RV, ship, yacht and other Material: Nylon + fiberglass colour: Black+Red Package Contents: 1 x Black 300A M8 Bus Bar 1 x Red 300A M8 Bus Bar Only the above package content, other products are not included. Note: Light reflection 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.