This hinged ring is entirely 316L steel and 16 gauge

Epoxy coating is over the balls to prevent gems from falling out

and has a 5/16" (8mm) diameter

These can be used in the helix

Material: Titanium 6AL-4V ELI ASTM F-136

Anodized Titanium Gem Nose Screw Color:Icy Blue This hinged ring is entirelyAnodized titanium gem nose screw. Material: Titanium ASTM F 136 Quantity: One piece Anodizing uses electricity to increase the thickness of the natural oxide that occurs on the titanium. Depending on the voltage used determines the color. Anodizing titanium is completely safe and hypoallergenic. *there may be slight color variances between batches, since we anodize to order please allow an extra 1 2 days for handling time