Features 1、Made of high‑quality material aluminum alloy, sturdy and durable, have a long service time. 2、Just use the key to control on the track, no additional installation tools are required. 3、Have humanized design, simple operation, easy and convenient to use and operate. 4、Used for horizontal sliding windows, vertical sliding windows and sliding doors, such as courtyard doors, glass sliding doors, sliding windows, etc. 5、Small in size and light in weight, convenient to carry and use at any time, very convenient and practical. Specification Item Type: Window Door Frame Locks Material: Aluminum alloy Purpose: Window safety Application Scenarios: Window locks are designed for horizontal sliding windows, vertical sliding windows and sliding doors, such as courtyard doors, glass sliding doors, sliding windows, etc. Package List 4 x Window Door Frame Lock 4 x Hex Key