This is a lock to prevent children from opening drawers. I had a hard time finding this product at the time because there weren't any like it. It prevented my child from opening and closing drawers and potentially breaking dishes, and also prevented them from putting small objects in their mouth. These are used items that have been removed, so they are dirty, but there are no functional problems. To open it, you push the inside with your finger to release the hook. To close it, you don't need to do anything special. To install, the hook is screwed to the back of the front panel. The hook receiver is screwed to the left side panel of the frame. Therefore, it is not the type that is attached to the surface, but rather hidden inside where it cannot be seen from the surface. The ones that stick to the front leave adhesive residue, making them difficult to remove, and even if you do remove them, the marks are unsightly, but this doesn't have that problem. However, it is not for everyone because you need to understand the structure to install it. Whether or not it can be installed depends on the construction, tools, and experience, so please refrain from asking questions. If the height of the drawer side panel is high, it can be installed by notching the drawer side panel. Photos available. Includes 10 receivers, arms, screws, and one sheet used for depth adjustment. To summarize the advantages and disadvantages: Advantages: * Just push with your finger to open. * When no longer needed, the appearance is completely unaffected by removing 4 screws. Disadvantages: * Installation is troublesome. In contrast, common alternatives: * It's troublesome to pinch with two fingers to open and close. * Difficult to remove and leaves marks when no longer needed. * Easy to install.