Mix and match with these irritation-free flat backs in heart, flower, and plain gold styles. Crafted from gold-plated surgical steel, they're both stylish and allergy-friendly. Material: Gold Plated, Surgical Steel Colour: Gold, Pink Dimensions: Total Length: 7 mm Post Length: 6 mm Feature Dimensions: Smallest Flat Back Length: 2 mm Smallest Flat Back Post Length: 6 mm Gauge: 18 g / 1.0 mm Feature surgical steel posts and contains cubic zirconia stones.