Set of 10 1/0 AWG copper ring terminals for battery or welding leads. Non-ins insulated tubular lugs with deep wire recesses for superb contact. Oxygen-free copper, heat tested, 600 A rating. Stud holes 1/4, 5/16, 3/8 or 1/2 in. True AWG 1/0 gauge size; will not fit oversized 1/0 wire.