· Thread depth of terminal post: In order to effectively avoid wire slip during use, thread depth should be 10mm. Let the connection voltage line more firm, not easy to loose. · Materials of PA66: 1, with good insulation and dielectric properties, safe and reliable use. 2, with good heat resistance aging, flame retardant. · Nickel plating process: improve the wear resistance and corrosion resistance of the product surface. · Sealing gasket: After screws are tightened, the sealing between the product and the plate is better. Card guard: easy to install, dust-proof, easy to plug and plug.·It is widely used in scenarios such as batteries and high-current machines.