Thank you for viewing! Gold-filled is made by bonding 14k gold to brass. It is called gold-filled when the weight of the gold is more than 1/20th of the total weight. It features an affordable price by using brass for the core (which does not touch the skin) while the surface is completely 14k gold. It is more durable and less likely to peel than plating. ▼ Earring Post ◎ Post length: Approximately 9mm, wire diameter: Approximately 0.6mm ◎ Round ball size: 2mm ◎ Round ring size: Approximately 1.0mm (open/close type) ◎ Color: Gold ▼ Earring Backs ◎ Size: Approximately 3.5 x 2.5mm ◎ Compatible wire diameter: Approximately 0.6-0.8mm ◎ Color: Gold Sold as a set of 1 pair x 5. Individual sales, bulk sales, handmade accessories, accessory parts, handmade parts, craft supplies, craft metal fittings, earring parts, earring parts