Package includes: the package comes with 1 piece portable 3 in 1 door lock; It is the warm and practical gift choice for friends, girlfriend, moms, classmates, colleagues, relatives,students and so on, sending your care and loveStrong and sturdy material: this door lock device is an updated and safer travel door lock, and made of quality 304 stainless steel precision casting, which is strong and can serve you for a long time; It is very reliable, unable to open the door even if it is pushed hard, providing you with extra security, protection and privacySimple to install: you can easily install the door lock without any installation tools, even if someone outside the room has the key, it is hard to open the door lock; The additional lock device is especially designed for travelers, college students, single mothers, suitable for families, hotels, schools, travel, etc.Size information: the travel door security lock measures about 3.15 x 1.97 inch/ 8 x 5 cm, with light weight and compact size, it is portable and can be carried in your pocket or handbag to provide self-protectionWarm reminder: this door lock safety can be applied for doors with the following characteristics: 1. interior door opening; 2. the side of the door must be flat without protrusion; 3. the door seam must be larger than 0.3 cm (0.12 inch), applicable door thickness needs to be within1 and 1/8", and the door without seam cannot be applied; Please confirm that your door meets the above characteristics before placing an order