The product is a lot of 5 Toshiba DT01ACA050 HDKPC01D0A05 S AA21/810 3.5" 500GB SATA HDDs. These internal desktop drives are designed for PCs and have a silver color with a 7200 RPM rotation speed. They are RoHS compliant and feature a storage capacity of 500GB, making them suitable for storing a large amount of data and files. The drives are from the DT01ACA Series and have a cache size of 32MB, providing fast data access and processing speeds. Made in China, these HDDs offer reliable storage solutions for desktop computers.