Seamless copper lugs offer superior corrosion resistance over "sandwiched-end" lugs. UL Listed, CSA Certified 8 Gauge, 3/8" Stud 600 Volts Max. 8 gauge 3/8" stud copper lugs. UL Listed and CSA certified. Seamless copper lug made of 99.9% pure conductive ETP copper. One piece tongue (not sandwiched) make them more conductive than a typical copper lug. Clearly marked for wire size. Features a flared and chamfered barrel to ease application of finely stranded wire or welding cable.