Material: 18K Gold over 925 Sterling SilverSize: Square is 10x10 mmRing: 2.8mm ring, 0.9mm inner diameter (so it fits 19 gauge rings and wire)Gauge: 20 gauge, 0.8 mm thickStyle: Smooth Square, fancy ear wireQuantity: one pair, 2 piecesSKU: 203060-VMUsage: the bottom ring is open, use ring, wire or jump rings to attach chains, pearls, beads, or charms. Personalize this piece!* Butterfly backs included