4mm rounded edge channel, 8mm total width, comfort fit interior
Tantalum has a rich grey to bluish grey color, It is also a rare earth metal
Tantalum is hard and durable, it also doesn’t tarnish, corrode or shatter.
Tantalum is hypoallergenic and bio-compatible
Tantalum is an inert metal and doesn’t react to other metals (cannot be magnetized, and it doesn’t conduct heat.