The helix earring studs are normal and standard size for helix tragus lip piercing jewelry. Oufer Body Jewelry Conch Piercing Jewelry Tragus Piercing Jewelry 20G 18G 16G Titanium Threadless Flat Back Earrings Nigeria | Ubuy Medusa Piercing Jewelry Tragus Earring Piercing Helix Tragus Conch Labret OUFER Body Piercing Labret Piercing Jewellery 16G/18G/20G Lip The flat back studs can be worn on different body piercing such as cartilage helix tragus conch lobe lip labret medusa piercing jewelry with 16G replacement bars of different lengths Plus, the shimmering opal adds a captivating pop of color and shine, Gauge = 16g(1., 2mm), Length= 6mm & 8mm, Diameter of opal = 3mm. The nose piercings are made of G23 Solid Titanium which is lightweight yet strong, making it ideal for those with sensitive skin.