Wire nut connectors use flame retardant materials to prevent the wires from coming into contact with other wires or metal surfaces, which can cause dangerous breakdowns or short circuits. Installation is faster, unlike solder connections, it can be easily disassembled for future modifications. The clamp nut cover is connected with a conical spiral metal spring or internal groove, and the wire is clamped to secure it securely, saving time and energy. Flame retardant shell, with good insulation and minimal aging.