The DOT Setting Die Set #22-RBS-4GR is crafted for precise installation of #4 grommets, compatible with plain, tooth, and neck washers to suit diverse fastening needs. This metal grommet die set, including both upper and lower dies, works efficiently with handheld or machine tools, providing a secure and reliable grip for industrial or home use. Its durable construction ensures consistent results when setting #4 grommets, making it a practical tool for upgrading patio decor and outdoor projects with professional-quality fastening.