It seems like you're asking about a "double-sided key" with specific dimensions. In some contexts, "chabi" might refer to a key or a key blank, and "14, 15 mm" could represent the dimensions of the key.
A double-sided key typically has cuts on both sides of the key, allowing it to be inserted into a lock in either direction. The dimensions you provided, 14 and 15 mm, could refer to the width and length of the key blade, but it's not entirely clear without more context.
If you have a specific question or need more information about a double-sided key with these dimensions, please provide additional details, and I'll do my best to assist you.
