Tech Team's cables feature 10mm – 3/8” diameter tinned double crimped 100% copper lug terminal ends with a protective heat shrink polyolefin sleeves to prevent moisture incursion and eliminate corrosion. There is no need to buy battery cables with 5/16” diameter lug ends because the 3/8” (6/16”) will fit both size terminal studs. When it comes to battery cables the LOWER the AWG number the HIGHER the current carrying capacity. Tech Team's #2 AWG cables carry far more current than other #4 AWG, #5 AWG, or #6 AWG (do not even think about #8 AWG) cables. This means less heat buildup and less voltage / amperage drop which prolongs the life of starters, inverters, motors, and other connected electrically powered devices. Includes one (1) red 36 inch #2 AWG 100% copper stranded wire battery cable with 100% copper 3/8” diameter tinned lug terminal ends with hear shrink protective sleeves.