What about the materials The NACS charging cable plug is made of PC+ABS, with pure copper conductors featuring silver plating for efficiency, and the cord uses high-strength TPE for safety and reliability IP65 Level Waterproof :Our NACS extension cord both sides are designed with IP65 waterproofing. Operating temperature ranges from -22 F to 122 F, making extension cables perfect for outdoor use How does it unlock Due to differences in models, the release button may not work on all vehicles this is not a product quality issue. If this happens, please use the button on the ORIGINAL NACS plug, the APP, or the car s CONSOLE to disconnect How does the compatibility Our ev charger extension cable is compatible with NACS mobile charger (32A max), wall connector (48A max), and destination connector (48A max), catering to the charging needs of Model 3/Y/X/S Contain portable bag Sure,contain the portable package bag,NACS extension cable,user guide.