Features: Prevent power theft, high security: socket lock can effectively prevent unauthorised people from using sockets or plugging in unsuitable electrical devices to ensure the safety of sockets and the electrical devices plugged in, thus saving energy and reducing pollution. Multiple protections for your safety: the socket lock prevents electrical devices from being stuck in the socket for a long time, reducing the risk of overheating and fires. It also protects against accidental touching by children or pets, thus ensuring the safety of your family. Easy to manage: socket lock can conveniently manage sockets, ensure that users are legal and compliant and avoid resource waste and device damage. The lock is made of alloy and the housing is made of high-quality ABS plastic. It is commonly used in European sockets. The zinc alloy lock is hard and strong and can effectively protect against various attacks such as breaking and destruction. Universal applicability: socket lock have many advantages such as high security, fire and electric shock prevention, economy and practicality, easy management and environmentally friendliness and energy saving, and are therefore widely used in various public places, schools, hospitals, factory and other places that require the protections of the safety of electrical devices. Specifications: Material: Alloy Size:Approx.38mm/1.5" Note: Please allow 1-2cm errors due to manual measurement,Please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 4Pieces/set Socket Lock