Portable Door Lock - Portable design, compact and convenient, you can carry a safety with you. Adds Extra Securtiy - Whether ,hotel, apartment or other short-term rental hotel, once installed our portable door lock, even if other people have a key, can not open the door from the outside, adds extra safety and privacy. Easy To Install - Simple install without any tools, just insert the metal piece into the recess on the door jam, close the door, then take the red handle grooves over studs on the metal piece, only take seconds. Sturdy material:This door lock is made of quality steel material, and sturdy, good workmanship ensures smooth and have no , not easy to break or deform, sturdy enough to ensures that the door cannot be opened after being locked. Portable lock installation instruction: Step 1: Before installing the portable lock, please check if it fit. There should be more than 2.5 mm space between door side and strike plate. Just insert end of lock into space to check if it's