Package Include: Package includes 1 x battery switch, 2 x copper conductive sheets, 1 x positive battery terminal connector, 4 x stainless steel mounting screws and caps to help fix the switch tightly. For any problems, please do not hesitate to write to us On/Off Switch: This Battery Disconnect Switch 12V features On/Off 2 Position; Rating: 275A DC Continuous (1hr), 455A DC Intermittent (5 min), 1250A DC Cranking (10 sec). Stud Size: 2x3/8" (10mm) Superior Quality: The battery switch is made of high quality ABS plastic, durable made for safety use, rear cover insulates terminals against any short of circuits. Compared with others, our battery disconnect switch is M10 tinned copper studs and comes with 2pcs copper conductive sheet, which is safer and more reliable in electrical conductivity Easy to Install: This rv battery kill switch comes with 2pcs copper conductive sheets mounting brackets. Our battery disconnect switch is installed on the positive of the battery, which is in line with your operation habit. Our unique design also makes your installation more flexible and simple compared with other's limited product design Wide Application: This battery shut off switch is suitable for DC 12 - 48V system to isolate and secure the electrical system, can stand alone or be locked together with other switches. It is widely used for Car, Marine, Boat, RV, Camper, Travel Trailer, Truck, ATV, UTV, Battery banks and other electrical equipment's switch