This product is a lot of 2 Toshiba DT01ACA100 500G 3.5" SATA HDD desktop hard drives. They have a rotation speed of 7200 RPM and a storage capacity of 500GB. These internal desktop drives are compatible with PCs and come in a silver color. They feature advanced format technology and are manufactured in China. The drives also have a cache size of 32MB and a transfer rate of 6000 Mbps. Additionally, they are covered under a 1-year manufacturer warranty and are designed to be halogen-free and RoHS compliant.