1. Durable: The door safety lock is made of hardened stainless steel, which can provide the greatest degree of safety door equipment protection while ensuring safety. The door lock uses a polished surface, which will not hurt your hands, and the steel material makes it have a long service life. 2. Small and portable: The door security lock can not only be used as a home security door lock, but its small and light size is also very suitable as a hotel door lock when traveling. The travel door lock is small enough to fit in a pocket or handbag and is easy to carry. 3. Easy installation without any tools: No drilling, nails, you can easily install in a few seconds, without any tools, and will not cause any damage to the door. Just insert the metal gasket into the groove between the door and the door frame and align them. With our hotel room security device, no one can open the door from outside. 4. Self-defense and protection: When you are traveling or living alone, the security door lock can prevent strangers from breaking into your room. These travel locks can also provide you with extra security, give you a sense of security, and let you sleep at ease. 5. Compatible with most doors: These can lock most doors in rooms with standard door sizes firmly. Add portable door locks to provide effective protection and safety for bathrooms, bedrooms, hotels, dormitories, apartments, etc. It is very suitable for travelers, college students, singles, women, and children to add a second protection.