Upgrade your outdoor projects with the DOT Setting Die Set #22-RBS-4RR, the essential tool for installing #4 rolled rim and spur grommets. This die set creates a precise 9/16 inch hole, ensuring a secure fit for grommets in a variety of materials. Designed for both machine and hand tool use, it works seamlessly with plain, tooth, or neck washers and is compatible with nickel plated brass and government black brass grommets. Whether you're reinforcing awnings, tarps, or patio covers, the DOT Setting Die Set #22-RBS-4RR delivers reliable performance for every grommet installation task.