🔥🔥Spring window door boltEnhanced security: French window locks offer enhanced security for doors and windows; Adding a lock also increases security. Even if you're away from home for an extended period, you don't have to worry about the security of your home. They're built like insurance, very good quality. They did the job of locking the secondary door and you would have to be a guard to get in with these latches. Best tools I've seen so far. Domenico's family KEY FEATURES