20 , 18 gauge Butterfly Silver Nose Stud. Left or right nostril screw end or L bend Size : 20 Gauge (0.8mm) // 18 Gauge (1.0mm) Butterfly : 7 mm x 9 mm Quantity : Single (1 piece) Material: 925 Sterling Silver, Oxidized Also available in: - Sterling Silver **** If Your nose piercing is on the left that it's mean You choose the left L bend or left screw .****