The 1-3/4 in. x 18-gauge Electro-Galvanized Brad Nails are made of steel construction for better penetration. Brad nails are made from a fine 18-gauge wire, making them ideal for preventing splitting and resulting in a cleaner end result in small moldings and trim. These nails are designed for use with Hitachi NT45A, NT50AD, NT32AE, NT32AE2, NT32AE2S, NT50AE, NT50AE2, NT50AE2S, NT50GS nailers. Brad nails also have a smaller nail head. This item measures 1-3/4 in. in length and comes in a (5,000-pack). Every Hitachi accessory is designed to the highest standards and is rigorously tested for both performance and durability. Since its inception, Hitachi has pioneered innovative technologies that have improved the quality of craftsmanship worldwide. Hitachi is a leader in power tool research and development and has achieved many firsts in the power tool industry. Today, Hitachi continues the tradition of innovation and engineering with new features in addition to classic quality.