Heavy Duty Lugs – 4 Gauge Wire – 5/16″ Post – 2-PackCable Gauge: 4Screw Size: 5/16″ANCOR Marine Grade 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. Specifications:Gauge: 4 AWGType: LugsPost Size: 5/16″Package Qty: 2Heat Shrink: NoBox Dimensions: 1″H x 2″W x 4″L WT: 0.04 lbsUPC: 091887253061Quick Guide (pdf)