Zirconium ring core, brushed top and polished comfort interior.
4mm total width, Approx. 2.4 mm thick
6mm total width, Approx. 2.4 mm thick
8mm total width, Approx. 2.4 mm thick
Flat top with no inlay groove, perfect for ring makers wanting to customize the channel to any requirement.
No need to make the core from scratch, all that's required is a channel and a little finishing afterwards and these become custom cores.
702 zirconium, sizes 4-13 available