Nomination classic charms are designed to fit the classic Nomination Composable Charm Bracelet — the style most people own. Each charm replaces one of the standard links in the bracelet.
At Niche Jewellery, all the Nomination charms we stock fit the Composable Starter Bracelets we sell.
Nomination also makes other bracelet styles that aren't designed for charms — such as extension bracelets — as well as charm-compatible styles like the 'Big Link' Composable, which we don't currently stock. So do check compatibility before buying charms for a bracelet from elsewhere.