♬Make of zincs Alloy, which is strong and reusable for a long terms. It has strong firmness. ♬: Just insert it on the door frame baffle and close the door. It is adjustable. You can tighten the screws by yourself until you is firm. ♬It can protect security and privacy when going out, business trip, vacation or living alone, unauthorized entry into room. ♬Small and light weight. It is easy to carry, and you can put it in your pocket, bag, or suitcase, taking up little space. ♬Suitable for travelers, college students, singles and more. You can use it at home, hotel, school and more., Manufacturer: YUPEIUKLI