This product is a lot of 8 HP 300GB 10K SAS 2.5" hard drives with Gen7 server caddies. The hard drives are designed for use with servers and have a storage capacity of 300GB each. They come in a 2.5-inch form factor and have a SAS interface for high-speed data transfer. Each unit includes a server caddy for easy installation and management within a server system. The model number for this product is 493083-001.