United Kingdom Size Magnetic Stud 8mm to US: 16G Piercing Standard

United Kingdom Size Magnetic Stud 8mm: Features a post thickness of 0 $\text{mm}$ (0 $\text{in}$), hoop inner diameter of 0 $\text{mm}$, gemstone carat equivalence of 1.00 ct Equivalent, and earring style Magnetic / Non-Pierced.

US: 16G Piercing Standard: Features a post thickness of 1.2 $\text{mm}$ (0.0472 $\text{in}$), hoop inner diameter of 0 $\text{mm}$, gemstone carat equivalence of 1.50 ct+ / Bold, and earring style Stud / Cartilage.