20 gauge , 22 gauge CZ Diamond Silver Nose Stud. Left or right nostril screw end or L bend Thickness : 20 Gauge ,22 Gauge CZ Size : 3 mm, 2.5 mm, 2 mm , 1.5 mm, 1.25 mm, 1 mm Quantity : Single (1 piece) Material: 925 Sterling Silver If Your nose piercing is on the left that it's mean You choose the left L bend or left screw .