This set contains two battery isolator switches (12 V type), each 85 mm long and 17 mm wide. Rated for 6 V, 12 V and 24 V battery systems, each switch carries up to 500 A. Key benefits Prevents parasitic drain: quickly disconnect the battery when a vehicle or equipment is stored to stop battery drain and avoid unexpected dead batteries. Extends battery life: removing parasitic loads during long periods of inactivity reduces wear and preserves battery charge. Adds safety and control: provides a simple, reliable way to isolate power for maintenance, transport, or emergency shut-off. What makes these switches stand out Solid construction: zinc alloy body with copper coating for excellent corrosion and oxidation resistance, plus a durable plastic knob for easy handling. High performance: 500 A transfer capacity accommodates heavy loads and high-current applications. Three-in-one protection: combines battery disconnect switch, shut-off protection, and battery insulation in a single device. Important specs and compatibility Quantity: 2 switches per set Size: 85 mm length × 17 mm width per switch Voltage compatibility: 6 V, 12 V, 24 V systems Current rating: maximum 500 A Terminal compatibility: fits battery pole heads with diameter 15–17 mm (standard size for the negative terminal) Materials: zinc alloy with copper coating; plastic knob Easy operation Turn the black knob to open or close the circuit quickly and safely. Simple installation on compatible battery posts; intuitive manual operation requires no power to operate. Practical applications Seasonal vehicle storage: disconnect batteries in cars, motorcycles, ATVs or classic cars during long-term storage. Recreational vehicles and boats: isolate batteries in RVs, caravans and boats between trips to prevent drain and reduce maintenance. Work and agricultural equipment: use on tractors, mowers or construction equipment to prevent accidental starts and simplify battery maintenance. Reliable, durable, and easy to use — ideal for anyone needing a compact, high-current battery isolation solution that fits standard negative terminals.