Heavy Duty Lugs Cable Gauge: 4 Screw Size: 3/8" ANCOR Marine Grade™ lugs 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; Product : ANCOR HEAVY DUTY LUG 4 GA WIRE 3/8" POST 2 PACK BULK Manufacturer : ANCOR Manufacturer Part No : 252256 UPC : 091887253085.