Head rail brackets measure approximately 1", which suitable for internal and external mounting._x005f_x000D_|Fine workmanship and creative appearance ensure its popularity and practicality._x005f_x000D_|The mounting brackets can match with all styles of curtains and a variety of home styles, not too rough._x005f_x000D_|With reasonable design and high adaptability, it can be well applied to your blinds, and it will be a good choice for you._x005f_x000D_|1 inch, please refer to the picture for size information before purchase, make sure to match your blinds. Head rail brackets measure approximately 1", which suitable for internal and external mounting |Fine workmanship and creative appearance ensure its popularity and practicality |The mounting brackets can match with all styles of curtains and a variety of home styles, not too rough |With reasonable design and high adaptability, it can be well applied to your blinds, and it will be a good choice for you |1 inch, please refer to the picture for size information before purchase, make sure to match your blinds