US: 20G Standard Stud to United Kingdom Size 8mm Snug Hoop

US: 20G Standard Stud: Features a post thickness of 0.8 $\text{mm}$ (0.0315 $\text{in}$), hoop inner diameter of 0 $\text{mm}$, gemstone carat equivalence of 0.25 ct - 0.50 ct, and earring style Stud / Minimalist.

United Kingdom Size 8mm Snug Hoop: Features a post thickness of 1 $\text{mm}$ (0.0394 $\text{in}$), hoop inner diameter of 8 $\text{mm}$, gemstone carat equivalence of N/A (Hoop), and earring style Hoop / Lobe-Hugging.