Chastity device discussions and reviews discussion

Good morning everyone. My husband usually wears a CB6000, which suits him well, but from a woman’s perspective, the plastic tubes look rather unsexy and purely functional. The hygiene requirements mean he needs to take out for a daily release. I really prefer seeing him in metal cages around the house - he owns a Spiderwire (with a ring that is too small), a chrome cage, and an Eros Steel metal cage. Even when properly sized, the handcuff hinge on the ErosSteel causes him some chafing. I would like to experiment with various solid rings to lock these different metal devices, but I am struggling to find a UK supplier selling just the rings separately. Has anyone found one? I don’t want to have to replace the whole cage if it’s avoidable!