The Cadex 21/18-2M 21 gauge headless pin nails, galvanized, 11/16-inches, 18mm, 10, 000 pack is a 21 gauge galvanized steel brad with a 18 mm (11/16") length. For over 18 years, Cadex has been dedicated to engineering and selling the highest quality pneumatic tools. A dedication to design, commitment to quality, and attention to detail have placed Cadex as a leader in the pneumatic market. A belief in building the highest quality tool that is engineered to work with you has driven Cadex to seamlessly integrate form and function, creating durable tools that not only work well, but look great too. Add to this several intuitive features that make every application easier and you have the essence and commitment of what Cadex is.