The product is a lot of 18 Samsung 256GB SSD PM871 solid-state drives, compatible with laptops and PCs. These black drives have a form factor of 2.5 inches and operate with a SATA III interface. With a storage capacity of 256GB, they offer fast transfer rates at 550 Mbps and feature removable design for easy hot swapping. Designed for optimal performance, these internal SSDs from Samsung are a reliable choice for enhancing the speed and efficiency of your computer's storage system.