Marine grade, premium UL1426 tinned copper battery cable Fine stranded to produce maximum conductivity and flexibilityRated to 600 volts and 105°C / 221°FTinned copper lugs resist corrosionEach end features adhesive lined 3:1 heatshrink tubing placed over the electrical connection to seal out moisture and other corrosive elementsHeatshrink tubing provides strain relief for longer-lasting battery connection