US: 20mm Medium Hoop to United Kingdom Size 20G Delicate Stud

US: 20mm Medium Hoop: Features a post thickness of 1.2 $\text{mm}$ (0.0472 $\text{in}$), hoop inner diameter of 20 $\text{mm}$, drop length of 20 $\text{mm}$, gemstone carat equivalence of N/A, and earring style Hoop / Everyday Medium.

United Kingdom Size 20G Delicate Stud: Features a post thickness of 0.8 $\text{mm}$ (0.0315 $\text{in}$), hoop inner diameter of 0 $\text{mm}$, drop length of 5 $\text{mm}$, gemstone carat equivalence of 0.10 ct - 0.25 ct, and earring style Stud / Minimalist.