Metal: Grade 23 Titanium. The colors are PVD plated G23 Titanium.
Bar Thickness: 16 Gauge (1.2mm)
Length: 1/4(6mm) or 5/16(8mm)
Internally Threaded. This type of body jewelry is recommended by piercing professionals.
The variation options refer to the post length(6mm-8mm), color and created-opal top size. The created-opal top measures either 3mm or 4mm and is held with 4-prong settings.