It seems like you're looking for a door key with specific dimensions. A "chabi" (often spelled "chavi" or "chaabi") is a key in various languages. A key with a 16-17mm size likely refers to the width or diameter of the key blade or the keyhole it's intended for.
Please note that key sizes can vary depending on the lock and key manufacturer. If you need a key of this size, you should contact a locksmith or a hardware store to get the right key for your specific lock. They can help you determine the exact specifications you need.
