Narva Cable Lug 25mm2 6mm Stud (Blister Pack of 2) - 57128BL.

Cable lugs are devices used for connecting cables to electrical appliances, other cables, surfaces, or mechanisms. They often consist of a metal piece with a hole in it and a clamp that holds the wire in place. The clamps that connect wires to an automotive battery are a common example of a cable lug, as are the ends of battery jumper cables.