Package includes: The package comes with 1 piece portable 3-in-1 door lock; It is a warm and practical gift choice for friends, girlfriends, mothers, classmates, colleagues, relatives, students, etc., to send your care and loveSturdy and Durable Material: This door lock device is a newer and safer travel door lock, made of high-quality 304 stainless steel precision casting, durable and durable, can serve you for a long time; very reliable, even if you push it hard, it can't be opened Doors for extra security and privacyEasy installation: The door lock can be easily installed without any installation tools, even if someone outside the room has a key, it is difficult to open the door lock; the additional lock device is specially designed for travelers, college students, single mothers, suitable for home, hotel, school, travel Wait.Size information: The travel door safety lock measures about 3.15 x 1.97 inches/8 x 5 cm, lightweight and compact, easy to carry, and can be placed in your pocket or handbag for self-protectionTips: This door lock is safe for doors with the following characteristics: 1. Open the door indoors; 2. The side of the door must be flat without protrusions; 3. The door gap must be greater than 0.3 cm (0.12 inches), and the applicable door thickness needs to be within 1 and within 1/8", doors without seams cannot be applied; please confirm that your door complies with the above characteristic order before placing the door