The product is a set of two 8GB Crucial SO-DIMM PC3-12800 (DDR3-1600) memory modules, providing a total capacity of 16GB. Each module has a capacity of 8GB, with a form factor of SO-DIMM and a bus speed of PC3-12800. They have a lifetime manufacturer warranty and are designed for slot-in installation in laptops or other devices requiring DDR3 SDRAM memory. Each module measures 2.87 inches in length, 0.08 inches in height, and 1.18 inches in width. With 204 pins, these memory modules are a reliable and high-quality upgrade for any computer system in need of increased memory capacity.