HIGH QUALITY: The materials used in their manufacture are obviously of high quality and are built to last. It feels solid and in your hand, giving you confidence that it stand up to regular use without any problems. It is just another tool in your toolbox that can continue to be used for years to come. USER-FRIENDLY: Easy to use and allows you to accurately unlock or open the door from the outside. Widely used: for emergencies such as firefighters needing to open doors to save lives, people who have lost their keys (especially in glass door stores), car owners with broken locks, etc., Weight: 0.26565702571 Pounds, Manufacturer: HuddleGlow