1) Excellent Waterproof Electrical Connector Kit - Provides 800 pieces / 50 sets of high-quality wire connectors, including 1 to 6-pin waterproof connectors. Each set is equipped with male and female terminals and a silicone rubber seal to ensure excellent electrical performance and waterproof effect. Suitable for 16-22 AWG wires, widely used in automotive electrical connections for motorcycles, trucks, ships, and more. 2) High Performance Automotive Connectors - Made from high-quality materials with excellent chemical stability, electrical conductivity and oxidation resistance. Terminals are brass with improved plug-in contact conductivity, ensuring a safe and reliable connection. Has bending endurance, is not easy to break, and is waterproof and dustproof to ensure long-term stable operation. 3) Easy Installation Design - The unique snap design ensures that the terminals are accurately and completely inserted into the housing to avoid the risk of slipping out. Easy to install by welding and crimping, the connection is reliable and will not loosen, while being lightweight. Can be easily disassembled for great convenience. 4) Excellent Conductive Performance - The automotive electrical connectors terminals adopt a high-precision copper plating process to improve conductivity and ensure easy soldering and crimp installation. Reliable and safe connection with no loosening problems, providing a perfect solution for car replacement spark plug connectors.