Material - Crafted from a high quality aluminum alloy for strong load capacity, durability, and resistance to damage. Easy to install and remove - Quick, tool free installation and removal in about three seconds. - Place the door blocker in the gap between the door and the floor, then tighten the screw clockwise. - No drilling or other tools required. - Note: the gap between door and floor must be between 0.8 and 5 cm. How it works - When mounted on the inside of the door, it prevents forced entry from the outside. - Pressing the door causes the lower part of the stopper to move downward and push the door upward. - The tension between the bottom edge of the door and the floor keeps the door from opening. Compact and portable - The door security blocker is delicate and small, easy to carry and store. - Despite its compact size, it is highly effective and suitable for travel. Use scenarios - Home: enhances security for bedroom or interior doors without permanent installation. - Hotels and accommodations: ideal for hotel rooms or rental properties where quick, temporary security is needed. - Travel and temporary stays: easy to pack and use on doors in dorms, apartments, or other temporary housing. Key attributes - Function: door security blocker that locks from inside to resist external entry. - Compatibility: works with door-to-floor gaps from 0.8 to 5 cm. - Material: aluminum alloy for durability and strength. - Performance: installs in seconds, requires no tools, portable, and effective for everyday security needs.