These are U.S. made blackened brass eyelets. These will fit into 1/4” diameter holes. The 8-10 size is slightly longer than the 8-8 and are perfect for joining two layers of .125 material together. These are also just long enough to join .125 and two layers of .080 which means you can hardmount your belt loops or accessories to your projects. Please check out our tooling section to find some low-cost eyelet setting options.