[Superior Materials and Durability] This car battery disconnect switch is made of pure copper and high-quality stainless steel, ensuring optimal conductivity and excellent corrosion resistance. Its robust construction guarantees a long service life and absolute reliability, even in the toughest environments. [Adjustable Terminals and Flexible Installation] This battery switch is equipped with rotating pure copper terminals, which adapt to any wiring angle. Its ingenious design allows for customized installation in tight spaces, whether under the hood of a car or SUV, or on a boat. [Easy to Use and Enhanced Safety] The two-position rotary switch (on/off) allows for immediate power cut-off. Simply turn it 90° upwards to isolate the battery, preventing accidental discharge and extending its lifespan. A tightening wrench is included for quick installation without additional tools. [Wide Application] This car battery disconnect switch is suitable for cars, trucks, RVs, boats, and industrial vehicles, effectively protecting your electrical systems from short circuits and fire hazards. It ensures stable voltage, reduces power loss, and delivers consistent performance. [Complete Accessories and Customer Support] The kit includes: 1 battery switch, 1 installation wrench, and 1 installation wedge for precise and secure installation. Compatible with 12V and 24V batteries.