Features: Ensure safe power cutoff during maintenance with this 12V/24V battery disconnect switches, designed for cars and trucks to prevent short circuits and electrical hazards. Built with corrosion resistant brass and iron materials for enhances durability, heat tolerance, and stable conductivity in harsh automotive environments. Essential for vehicle owners, mechanic, or DIY enthusiasts needing reliable battery circuit control during repairs, upgrades, or long term storage. Guard electrical systems when replacing batteries, performing engine work, or securing parked vehicles against parasitic drain risks. The knob design simplifies installation and operation, making it a practical addition to any car, truck, or power equipment setups. Specifications: Material: Copper, Iron Length: about. 126mm/4.96in Voltages: 12V 24V Pattern: Positive/Negative Package Includes: 1pc Shut Off Switches note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.