[Product Name] - Bus bar terminal block 12v, these battery bus bar 12v will come in pairs, includes one positive bus bar (red) and one negative bus bar (black). [300A M10 Stud Busbar] - This battery distribution block can handle max 300A continuous amperage at Max 300V AC or 48V . Each battery terminal block includes - 6 x M10 (3/8Inch)terminal studs. [Round Corner Base] - This 12v bus bar is unique round corner base design, which makes the marine bus bar unique and special, looks more extraordinary compared with others. [ Cover] - The exposed area of two side of this 12v distribution block cover allows 180 wire lug installation, can meet a kinds of install methods of end terminals. [Application] - This 300A bus bar will have better performance in high current systems. The package includes one positive and one ground distribution block, suitable for automotive, car, marine Colour:Black & Red Material:Plastic+Metal Package Contents: 1 * Red Positive Bus Bar 1 * Black Ground Bus Bar 4 * Mounting Screws 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.