Portable door lock that installs in seconds with no tools required. The instruction manual contains provides you with extra security and privacy. The portable door lock cannot be opened easily evenif others have the key outside the room when you sleep and rest. Iron piece 5.12*1.6*0.47 inch, middle chain length 4.7 inch, black 2.16*0.39 inch. gives you extra safety, security and privacy. Use it at home or take it with you when you travel,apartment living, hotel students, school lockdown, also great if you're staying in an AirBNB or other short-term rental. The security lock is equipped with a carrying pocket bag. Ideal for renting a room, traveling and going on vacation. They are all handmade and some imperfections are normal. Does not affect normal use. Carefully install the door lock or it would be easy to bend and break. And the door lock is the second protection, you should also lock your door, instead of relying on it. Tips: Door seams should be greater than 3mm. This keeps you safe indoors, wherever you are, at home or elsewhere.