Highest amperage rated bus bar (500A) withM8 (5/16inch) * 4+M10(3/8inch)*2 terminal studs Module box design for easy wiring configurations In addition, this Power Distribution Terminal Block comes with 4 M8 bolts and 2 M10 bolts, ensuring secure and reliable installation. The wire inlets and outlets are equipped with rubber gaskets to prevent accidental contact and provide dust and water protection, achieving a dust and waterproof function, which helps to safeguard the stability and safety of the wires and connectors. The High Current busbar is also known for its durability and stability, making it perfect for various industrial and commercial applications. Its compact design and outstanding performance make it an excellent choice for electrical systems, especially in situations that require high current transmission and dust and water protection. We believe that this 500A bus bar will meet your needs and provide excellent performance and reliability for your automotive, car, marine, boat, etc. Design 6 Studs 48V 500 AMP High Current Bus Bar Power Distribution Terminal Block Continuous Rating Voltage:500A 300V AC/48V DC Conductor Size:12-28AWG Type:Screw Terminal Studs:M8 (5/16inch) * 4+M10(3/8inch)*2 Max Voltage:300V AC, 48V DC Max Continuous Amperage:500A DC Material of terminal:6mm Pure Copper Plate Application The package includes both positive and ground distribution block, which is easy to use. This bus bar 12v is suitable for both automotive and marine use, such as car, truck, rv, utv, atv, boat, yacht, etc. Colour:Red Material:plastic Package Contents: 1 x 500A Marine 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.