Hypoallergenic black PVD titanium BCR (ball closure ring/captive bead ring) with titanium clip-in ball.
These BCRs are a slightly darker black than the ones with hematite clip-in balls.
10mm internal diameter titanium rings are closed with 4mm clip-in balls.
6mm, 7mm and 8mm rings are closed with 3mm clip-in balls.
Compatible with appropriate size clip-in accessories
Due to the way they are put in BCRs are not recommended for children.