Standard stainless steel nut and washers are included; wiring can be completed with a regular wrench, no professional tools required. Three screw diameters in imperial units: 1/4', 5/16', and 3/8', suitable for 12V48V wide voltage systems. They can be used for automotive circuit modification, power distribution, and industrial equipment wiring. Suitable for wiring connections of automotive batteries, inverters, charging stations, and other equipment; a universal accessory for modification and industrial maintenance. A single screw can withstand a continuous current of 50A, with a 20% increase in crosssectional area and a 15% increase in conductivity efficiency compared to ordinary terminal posts. It does not generate heat or soften during longterm load operations. Use scenarios Automotive and offgrid power systems: connect automotive or RV battery banks to inverters or charging stations in 12V48V setups, ensuring robust, lowloss connections. Marine and shipboard power distribution: reliable wiring connections for functional and durable power distribution on vessels, where corrosion resistance and stable conductivity are important. Industrial equipment and maintenance: modify or maintain power wiring for industrial machinery, charging stations, and other heavyduty electrical equipment requiring current performance and dependable connections.