It seems like you're asking about the size of a double-sided key, commonly used for locks. In this context, "chabi" might refer to the key, and "double 6mm, 7mm" may indicate the dimensions of the key.
Typically, when specifying the size of a key, you are referring to the width of the key blade. A standard key width for a household door lock is usually around 5mm to 6mm. So, if you have a "double 6mm, 7mm" key, it might be a key with a blade that is 6mm wide on one side and 7mm wide on the other.
Keep in mind that key dimensions can vary depending on the type of lock and manufacturer, so it's essential to ensure that the key matches the lock you intend to use it with. If you're dealing with a specific lock or need a duplicate key, it's best to consult with a locksmith or the lock manufacturer to ensure you get the correct key.
