Features: The screw nut is crafted from stainless steel, making it less prones to rusting in humid environments or in contact with electrolytes; Paired with a flame-retardant nylon plastic base, it effectively isolates the risk of electrical leakage and ensures electrical safety. ​ We offer three types of screw diameters in English: 1/4 ", 5/16", and 3/8 ", suitable for 12v-48V wide voltages systems. They can be used for automotive circuit modification, ship power distribution, and industrial equipment wiring. A single screw can withstand a continuous high current of 50A, with a 20% increase in screw crossing-sectional area and a 15% increase in conductivity efficiency compared to ordinary terminal posts. It does not generate heat or soften during long-term high load operation. Standard stainless steel nuts and washers, no professional tool required, wiring can be completed using a regular wrench. Suitable for wiring connections of automotive batteries, inverters, charging stations, and other equipment, it is a universal accessory for DIY modification and industrial maintenance. Specifications: Component:Stainless Steel,ABS Size:1/4inch,5/16inch,3/8inch Working voltages: DC48V Package Includes: 1Pair Power Distribution Block note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.