Heavy Duty Lugs - 4 Gauge Wire - 1/4 Post - 100-PackCable Gauge: 4Screw Size: 1/4ANCOR Marine Grade(TM) lugs are manufactured from heavy duty annealed tinned copper, providing for maximum current flow100% tin plated copper resists corrosion from salt and moistureSeamless barrel design allows for maximum strength when crimpedClosed end design seals out moisture so cables stay dry and corrosion freeWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.