It is a slide rail with a "detent mechanism" that holds its position when closed, despite having a small cross-section of 16mm × 20mm.
The trigger for the development of this series was an inquiry from a customer looking for "a small slide rail that can be used in a wine cellar, has a click feel when stored, and includes a function to hold it in that storage position." In fact, this product is perfect for wine cellars with slide rail specifications that want to increase implementation density. When installing shelves at the necessary height for wine bottles to store more wine, if you have a variety of wines in stock, it is easier to pull out the entire shelf to check the labels rather than pulling out each bottle one by one. Additionally, if you store the bottles at an angle to make the labels visible, the number of bottles that can be stored decreases. When you search for "wine cellar," you will find various types of shelves. I believe that a wine cellar with slide shelves using slide rails is the best option for maximizing storage capacity and easily checking wine labels at a glance.