Security and Privacy - This portable door lock provides you with extra security and privacy, greatly improving your security and preventing unauthorized entry, so the door cannot be opened from the outside even with a key; when you are on a business trip, traveling or alone This is a great helper for you when you are living. Easy to use - Easy to install or remove, this door lock can be installed in seconds without any tools, even in emergencies and in the dark. Simply insert the metal piece into the slot of the door lock, close the door, and then place the red handle groove into the stud on the metal piece, then no one can open the door from the outside. HIGH QUALITY MATERIALS - The door safety device is made of solid stainless steel. Sturdy ABS plastic cover prevents door from damage under pressure. The steel surface with electroplating and polishing technology ensures a smooth touch and minimizes damage to the skin. High-quality, sturdy door locks guarantee a longer service life. WIDELY USE - The anti-theft door catch contains two holes of different sizes to ensure a match with all types of door locks. Perfect for hotels, dorms, apartments, short-term rentals, Airbnbs, bathrooms, bedrooms or private rooms. It can also be used to keep pets out and to prevent children from opening doors to strangers. COMPACT DESIGN & CUSTOMIZED CUSTOMER SERVICE - Dimensions 4.3 x 1.26 x 0.4 inches, with 0.78 inches (2 cm) and 1.2 inches (3 cm) holes, lightweight and compact, you can put it in your pocket or handbag.