It seems like you're asking about a "chabi" with two different sizes, 12mm and 13mm. In many contexts, "chabi" typically refers to a key or a key-like object used for locking or unlocking doors, locks, or other mechanisms. The sizes you mentioned (12mm and 13mm) may refer to the width or diameter of the key's shaft or blade.
If you have a key with these sizes, it's important to know the specific application or lock it is intended for. Different locks require keys of specific sizes and shapes, and using the wrong key may not work or could potentially damage the lock.
If you have more specific questions or need further assistance, please provide additional details, and I'll do my best to help.
