The Kason 10056L06021 is an unkeyed latch, often used in commercial refrigeration equipment like walk-in coolers and freezers. Kason is a well-known manufacturer of hardware for these applications. This particular latch is "unkeyed," meaning it doesn't require a key for operation; it typically uses a simple handle or lever mechanism to open and close. https://partsfe.ca/10056l06021-kason-kason-10056l06021-latch-unkeyed