4 AWG Tinned copper cable lug features pure electrolytic copper, seamless tube construction and is UL listed for use on flexible stranded copper wire and cable such as marine wire (marine battery cable), welding cable and other class k stranded wire types. Marine grade tin plated to resist corrosion but ideal for any installation where long life is preferred. 4 AWG Gauge cable lugs are available to fit various size studs and can be crimped or soldered.