1Power Distribution Block: This terminal block could bring together the wiring harness to properly store the lines inside the car and boat, avoiding clutter and dangerous line situations. 2Parameter: The maximum voltage is 48V Dc, maximum continuous current is 300 amperes. High current modular box design, convenient wiring configuration. 3Detachable Window: Designed with 6 detachable windows for unobstructed wiring; The empty writing space at the top makes it easy to mark each branch. 4Material: The base is made of nylon glass fiber reinforcement, has good flame retardant properties. The brass and nickel plated terminals conductors have low resistance, high conductivity. 5Wide Applications: Applicable for 12?48V car, trucks, RVs, marine, boats and other industrial equipment, useful for customizing vehicles or relocating batteries.