The product is a lot of 7 Dell 300GB 15K RPM 6Gbps 3.5" SAS hard drives, model HUS156030VLS600. These internal desktop drives have a silver color and feature a hot swap capability. With a storage capacity of 300GB and a cache size of 64 MB, these hard drives are designed for high performance and reliability in desktop environments. The SAS interface allows for fast data transfer, making them suitable for demanding computing tasks. Compatible with PCs, these hard drives offer a cost-effective storage solution for desktop systems.