The product is a set of 4 pieces from ICY DOCK, including three ExpressCage SAS SATA units (MB741SP-B) and one SATA SAS enclosure (MB795SP-B). These black drive enclosures are designed for 2.5-inch drives and are made in China. The set is perfect for organizing and storing a collection of solid-state drives in a computer or networking setup. With the ICY DOCK brand known for quality and reliability, this product is sure to enhance the functionality of any storage solution.