The product is a lot of 200 Grip Rite 2-1/2" (2.5 inch) ring shank plastic cap nails, model GC212 212PRCAP1. These nails are made of plastic and galvanized steel, with a head diameter of 1 inch and a flat head style. They are designed for inch measurements and have a gauge of 11. Ideal for various home improvement and building projects, these cap nails provide a secure fastening solution.