Features: 1.4 Studs: With this 4 post power distribution block, you'll have plenty of connection points for both positive and negative wiring terminals with 3/8in holes. 2.Good Performance: The busbar is made of zinc alloy and brass, good electrical conductivity, and each busbar has a cover to protect connections from damage. 3.Safe to Use: Power distribution junction block designed with a removable cover, protecting the connection, and the insulated nylon base is flame retardant. 4.Size: Stud size is 3/8 inch. The battery bus bar measures 6.7 x 1.3 x 1.73 inches, and the maximum amplifier for each circuit is determined by the connected wire. 5.Widely used: distribution block is widely used in 12 48V car and ship wiring, truck, RV, ship, trailer and other industrial equipment. Specification: Item Type: Power Distribution Block_x000D_ Material: ABS, Zinc Alloy, Brass, Nylon_x000D_ Stud Size: 3/8in_x000D_ Power Distribution Block Size: Approx. 6.7x1.3x1.73in / 17.02x3.3x4.39cm_x000D_ Maximum Voltage: 48V DC_x000D_ Current Rating Per Stud: 62.5A_x000D_ Rated Current of the Whole Electric Block: 250A_x000D_ Auxiliary Terminal Screw Current: 20A_x000D_ Function: Bring the wiring harness together to reasonably store the wiring inside the vehicle and boat_x000D_ Scope of Application: Can be used in power systems of automobiles, RVs, ships, yachts, etc.