1、4 Studs: With this 4 post power distribution block, you will have plenty of connection points for positive and negative terminal blocks with 3/8in holes. 2、Good Performance: The busbars are made of zinc alloy and brass with good electrical conductivity, each busbar includes a cover to protect the connection from damage. 3、Safe to Use: The power distribution block is designed with a removable cover, protecting the connection, and the insulating nylon base is flame retardant. 4、Size: The stud size is 3/8in. The battery busbar measures 6.7 x 1.3 x 1.73in, and the maximum amplifier per circuit is determined by the connected wires. 5、Wide Applications: Power distribution block is widely used in 12‑48V automotive and marine wiring, trucks, RVs, boats, trailers and other industrial equipment. Item Type: Power Distribution Block Material: ABS, Zinc Alloy, Brass, NylonStud Size: 3/8in Power Distribution Block Size: Approx. 6.7x1.3x1.73in / 17.02x3.3x4.39cm Maximum Voltage: 48V DC Current Rating for 1 Stud: 62.5A Rated Current of the Whole Electric Block: 250A Auxiliary Terminal Screw Current: 20A Function: Bring the wiring harness together to reasonably store the wiring inside the vehicle and boat Scope of Application: Can be used in power systems of automobiles, RVs, ships, yachts, etc. 1 x Power Distribution Block (with Cover and 2 Busbar Cap)