- Safe Lock by Weiser was designed with one thought in mind, providing you with quality, dependability, and security. A favoured mix of styles and finishesensure that you provide the look and feel that families want. The perfect starter home package designed to leave a lasting impression.- For use on exterior doors where keyed entry and security is needed- Features an adjustable latch to fit all standard door preparations- Locking mechanism functions with turn piece on the interior of the lock- ANSI/BHMA grade 3 certified Deadbolt