: Simply insert the door frame baffle and close the door. Adjustable. You can tighten the screws by yourself until you know it is tight Made of zinc alloy, durable and durable for long term use. Strong resilience Small and lightweight, easy to carry, you can put it in your pocket, bag or suitcase and take up very little space Suitable for travelers, college students, bachelorette etc. Can be used at home, hotel, school, etc Protect your security and privacy when going out, business trips, vacations, living alone, or any unauthorized entry into a room, Manufacturer: Rxgiasup