The final design is built up layer by layer in stainless steel using direct metal 3D printing and infused with bronze. The rings are coated in a plastic clear coat to help prevent oxidization but with use may oxidize over time.
stainless steel, bronze infused
sz 5 circumference 49mm
sz 6 circumference 51.5mm
sz 7 circumference 54mm
sz 8 circumference 56.6mm