– ANCOR Marine Gradelugs are manufactured from heavy duty annealed tinned copper, providing for maximum current flow. – 100% tin plated copper resists corrosion from salt and moisture. – Seamless barrel design allows for maximum strength when crimped. – Closed end design seals out moisture so cables stay dry and corrosion free.Choose from 2, 4, & 6 gauge wire and 5/16″, and 3/8″ ring terminals.2 Per pack