DOT Self-Piercing Grommet with Grip Tooth Washer #3 (20007SP35183TXC) is a nickel-plated brass set designed to reinforce 7/16 inch holes in fabric and similar materials without pre-punching. This heavy-duty industrial grommet kit includes grip tooth washers that provide a secure, tight fit for banners, signs, awnings, and outdoor fabric applications. The corrosion-resistant nickel finish ensures durability in both indoor and outdoor environments, offering long-lasting hole reinforcement and protection. Sold in a 500 pack, these commercial-grade metal grommets are engineered for fast installation and reliable performance, making them a practical accessory to upscale patio decor and enhance outdoor living spaces with durable hardware.