Privacy and safety for every door - Keeps rooms private while letting you open the door a few inches for identification or ventilation. Mounting out of reach from children adds extra safety for households with kids. - Suitable for swing-in doors, cabinets, or windows to improve security and control access. Dimensions - Length: about 4.10 in; width: about 2.48 in. Please refer to the product size image for details. Advanced features for reliable security - Steel ball positioning locks the locking arm in place to prevent unwanted swinging. - Countersunk hole design provides a clean, elegant appearance. Durable and long-lasting - Made from high-quality zinc alloy with a polished finish that resists rust and oxidation. - Ultra-thick swing arm and solid lock base for strong, durable performance. - Easily unlocks from the inside with a simple swinging motion while resisting forced entry from the outside. Easy installation and low maintenance - Ensure your door frame is flush. - Attach with mounting screws; install on doors, cabinets, or windows using a drill. Use scenarios - Interior bedroom or bathroom doors to maintain privacy while allowing quick entry for check-ins. - Nursery or kids’ rooms to keep doors secured from little hands while still allowing adult access. - Kitchen or medicine cabinet doors to restrict access to valuables or hazardous items.