Our Mood Gold Teal Resin And Heart Mixed Earrings - Pack Of 3 is designed for the everyday, wear solo or mix and match to your style, this pack makes the perfect gift. Fastening: Post and Bullet Back. Width Dimension: Left ER: 10mm / Middle ER: 4mm / Right ER: 6mm. Drop Dimension: Left ER: 10mm / Middle ER: 15mm / Right ER: 20mm.