These dependable #1 (5/16") self-piercing brass grommets offer classic visual appeal and unparalleled reliability. They are made entirely from superior, heavy-gauge brass with a high 70% copper content, which grants them natural corrosion resistance and exceptional malleability and strength in all weather conditions. Excellent for reinforcing materials such as smaller canvas goods, footwear, light luggage, or drapery, these 5/16-inch fasteners provide a secure, permanent attachment point. The integrated self-piercing capability enables ultra-fast application: simply deploy the heavy-gauge eyelets and their gripping washers in a single, streamlined action, accelerating your production flow while preserving industrial-grade quality.