This 14K Solid Gold Piercing is a beautiful and durable piece of jewelry that is sold individually, not as a set. The 18Gauge post thickness of 1.0mm provides a secure and comfortable fit for the earring. The post length of 8mm is suitable for most earlobes and provides a comfortable fit. The chain length of 21mm and 15mm provides versatility in wearing the earring with different outfits and styles. The back finding of the earring is a disk with an outer diameter of 4mm and a thickness of 0.85mm, which provides a secure and comfortable fit for the earring. The weight of the earring is 0.38g, making it lightweight and comfortable to wear for extended periods. The 14K Solid Gold material is durable and long-lasting, ensuring that the earring will remain in good condition for a long time. Overall, this piercing is a beautiful and durable piece of jewelry that is perfect for adding a touch of elegance to any outfit. With its secure fit, versatile chain length, and lightweight design, it is a great addition to any jewelry collection.