DOT Rolled Rim Grommet with Spur Washer #1 is crafted from nickel-plated brass for corrosion resistance and durability, ideal for reinforcing 13/32 inch holes in thick materials like canvas, vinyl, leather, tarps, and banners. Its rolled rim design combined with a spur washer featuring interlocking teeth ensures a strong, secure grip that holds up well in outdoor, marine, upholstery, and industrial settings. This pack contains 144 sets, providing a polished finish that enhances outdoor decor elements such as awnings, curtains, and safety gear. Compatible with manual or automatic installation tools, this heavy-duty grommet offers reliable fabric reinforcement for projects requiring lasting strength and professional results.