Thread depth of terminal post: In order to effectively avoid wire slip during use, thread depth is 17.3mm. Make the connection voltage line more firm, not easy to loose, eliminate hidden dangers. PA66 material :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. Card guard: easy to install and dust-proof.It is widely used in scenarios such as batteries, storage cabinets, and high-current machines.