Condition: new battery terminal anti-theft circuit breaker with nut; easy to install and disconnects the negative terminal to prevent battery discharge and theft Product name and purpose: Battery Terminal Cut-off Anti-theft Switch with Nut for car security and battery protection Installation details: disconnect negative terminal, place faucet on battery terminal, reattach the previously disconnected terminal after use; unscrewing the large screw disables vehicle start Key features: anti-theft circuit breaker with tightening screw for secure operation Compatibility and details: battery terminal cut-off valve described; compatible with standard battery terminals; includes nut for secure mounting .