Premium material: 4 Gauge marine grade battery cables are made of pure copper with tin coating, designed for outdoor using with UV, flexibility, high heat resistance, anti- corrosion and flame retardancy. Heavy duty 3/8" lugs: Made of pure copper with tin coating, allows for maximum power trasnfer while the tinned coating will help prevent corrosion. High current and voltage carrying capacity: Have strong stability, conductivity and protection from corrosion. Rated up to 600 volts, the maximum operating current is 95A. High security: Premium material makes sure that it can keep working stably in temperature from -40°F to 392°F (-40°C to 200°C) . Made to withstand harsh marine and outdoor environments. Large diameter cable: Each cable has 2 pcs heavy duty 3/8"(SC25-10) lugs (already crimped) on both ends. Safe for use in outdoor, cars, trucks, RV, solar, boats, wind dynamo, home etc. Safe for use in outdoor, cars, trucks, RV, solar, boats, wind dynamo, home etc. Specification: Rate voltage: 600V  Maximum operating current: 95A  Contact resistance： ≤0.5MΩ  Cable length: 2FT  Input cable specification: 4AWG  Operating temperature: -40°F to 392°F (-40°C to 200°C)  Cable material: Tin plated copper  Heavy duty lugs: 3/8"(SC25-10) Tin plated copper  Package includes:  1 x Black 4 AWG Battery Cable 1 x Red 4 AWG Battery Cable