Multiple Size Sets: 8pcs nose studs in a set, All Gauge--20G(0.8mm); Pin Length: 7mm; Cubic Zirconia Size: 1.5/2/2.5/3mm. 20 gauge studs earrings perforation size suitable for most people. Hypoallergenic Stainless Steel Nose Stud: This gold/silver nose ring is expertly crafted from premium 316L surgical steel and AAAAA+cubic zirconia, specifically designed for sensitive skin.