5 TIN PLATED Big Copper Lug RING Terminal Connectors #4/0 Wire Gauge 5/16″ Stud #4/0 Wire Gauge AWG 5/16" Stud. They are for a #4/0 Wire Gauge AWG and a 5/16" Stud. Tin Plated for Better Corrosion Resistance. byJuly 3, 2026