The Performance Tool W54287 15-Piece Drain Plug Socket Set is specially designed for working with Subaru differentials. It includes a range of drain plug sockets with 11mm and 13mm square drives, providing a precise fit for various Subaru differential drain plugs. The set features high-quality construction for durability and reliable performance. With this comprehensive set, you'll have the necessary tools to remove and install drain plugs on Subaru differentials with ease.