We're carring a new line of metric quicklinks. The beauty here is that the bar stock and threads are nearly the same size -- our standard quicklinks have an outsized thread. This means the bar stock can be put through much smaller openings. As an example, see our new 2 mm quicklink joined with our Pico (jewel) clip. These are tumble polished, and have a high sheen. These are beautiful parts. Links available in 2, 2.5, 3, 4, 5 and 6mm bar stock.