These earring posts have a flat surface for attaching beads, findings and more! The flat surface is perfect for creating vintage style earrings by gluing on flat back cabochons. 22K gold plating over brass. Measurements: 4mm diameter flat surface. Post is 10.3mm long and 22 gauge thick. Post includes groove to hold earring back securely in place. (Backs not included) Quantity: 20 Posts (10 Pairs)