These specialized #4 (1/2") self-piercing brass eyelets deliver exceptional holding power for demanding projects. Crafted from premium, heavy-gauge brass (a 70% copper, 30% zinc alloy), the tactical Military Black Oxidized finish provides a long-lasting, non-reflective, and resilient surface. This finish actively resists rust and wear, making it the top choice for industrial fabrics and camouflaged canvas gear. The included integrated gripping washers firmly anchor the eyelets, optimizing retention on thicker materials such as outdoor tents, commercial tarpaulins, and large display banners. Installation is swift and professional; these heavy-gauge self-piercing components cut and set in one fluid motion, dramatically improving efficiency and guaranteeing superior, enduring outdoor results.