The price is for 1? piercing , you will receive a single?piercing? not a pair?

A type?

• pin thickness: 0.8mm (about 20g)
• innerdiameter: 5mm
• outerdiameter:7.5mm? ? ? ? ? ? ?
• Pearl : 3.5mm?

B type?

• pin thickness: 0.8mm (about 20g)
• innerdiameter: 6mm
• outerdiameter:8.5mm? ? ? ? ? ? ?
• Pearl?: 3.5mm?

C type

• pin thickness: 0.8mm (about 20g)
• innerdiameter: 6mm
• outerdiameter:8.5mm? ? ? ? ? ? ?
• Pearl?: 4.5mm ( -0.5mm)

Material : 14K Gold, 14K Rosegold, Whiteplated 14K Gold?