As one of the standard accessories for 50 series aluminum alloy sliding doors, it is suitable for small door handles with large door bodies and inconvenient daily sliding switches. The accessories are separately molded and made of 304 stainless steel. When in use, the small door is punched on both sides and then fixed inside the door panel with screws, making it convenient for the small door switch to enter and exit, simplifying the opening and closing steps, saving time and effort. Not prone to rusting, beautiful and atmospheric, the spherical lock is equipped with a key, which can be used to lock and open when entering or exiting, fully ensuring the safety of your factory warehouse.