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 Piercing 
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 Standard Gauge 
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 Standard Stud / Bar Length 
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 Standard Hoop Diameter 
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 Nose Piercing / Nostril / High Nostril 
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 18G(1mm); 16G(1.2mm) and 20G(0.8mm) are also commonly used 
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 1/4"(6mm), 5/16"(8mm) 
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 5/16"(8mm), 3/8"(10mm) 
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 Septum Piercing   
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 16G(1.2mm); 14G(1.6mm) and 18G(1mm) are also commonly used 
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 5/16"(8mm), 3/8"(10mm) 
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Bridge / Austin Bar (commonly done with barbells)
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14G(1.6mm), 16G(1.2mm), 12G (2mm) | 
9/16"(14mm), 1/2"(12mm), 5/8"(16mm) | 
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Rhino or Vertial Tip (commonly done with curved barbells)
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14G(1.6mm), 16G(1.2mm) | 
3/8" (10mm), 1/2"(12mm)
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Septril / Mantis (commonly done with studs)
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16G(1.2mm), 18G(1mm) | 
1/4"(6mm), 5/16"(8mm), 3/8"(10mm) | 
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Nasallang (commonly done with straight barbells)
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16G(1.2mm), 18G(1mm) | 
Between 5/8"(16mm) and 1 3/16″(30mm) | 
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Third Eye (commonly done with anchors and surface bars)
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14G(1.6mm) | 
1/2"(12mm), 9/16"(14mm), 5/8"(16mm) | 
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 Lip Piercing / Labret / Monroe / Medusa / Madonna / Snake Bites 
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 14G(1.6mm) or 16G(1.2mm) 
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 5/16"(8mm), also available in 1/4"(6mm) and 3/8"(10mm) 
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 3/8"(10mm),1/2"(12mm) 
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Ashley Piercing (commonly done with studs) | 
16G(1.2mm) or 14G(1.6mm) | 
5/16"(8mm), also available in 1/4"(6mm) and 3/8"(10mm) | 
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 Vertical Labret / Jestrum (commonly done with curved barbells) | 
 14G(1.6mm) or 16G(1.2mm) 
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 5/16"(8mm), also available in 1/4"(6mm), 3/8"(10mm) and 1/2"(12mm) 
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 Forward Helix or Thin Helix  
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 16G(1.2mm), 18G(1mm) 
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 1/4"(6mm) 
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 1/4"(6mm) 
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 Ear Piercing / Cartilage / Tragus / Helix / Daith 
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 16G(1.2mm), 18G(1mm) 
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 1/4"(6mm), 5/16"(8mm) 
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 5/16"(8mm),  1/4"(6mm) and 3/8"(10mm) 
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 Conch 
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 16G(1.2mm), 18G(1mm) 
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 1/4"(6mm), 5/16"(8mm) 
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 3/8"(10mm), 1/2"(12mm) 
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| Rook | 
16G(1.2mm), 14G (1.6mm)  | 
1/4"(6mm), 5/16"(8mm),  3/8"(10mm) | 
1/4"(6mm), 5/16"(8mm) | 
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Snug (commonly done with small hoops and curved barbells) | 
16G(1.2mm) | 
1/4"(6mm),  5/16"(8mm) | 
1/4"(6mm), 5/16"(8mm) | 
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 Ear Lobe Piercing 
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 20G(0.8mm), 18G(1mm) and 22G(0.6mm) are also commonly used 
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 5/16"(8mm), 3/8"(10mm) 
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 5/16"(8mm), also available in other sizes  
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 Industrial Piercing (commonly done with straight barbells) 
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 14G(1.6mm); 16G(1.2mm) is also commonly used 
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 1 1/2" (38mm); size varies 
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 Tongue Piercing 
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 14G(1.6mm) 
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  5/8"(16mm), 9/16"(14mm), 1/2"(12mm) 
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 5/8"(16mm) 
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 Eyebrow Piercing 
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 16G(1.2mm), 14G(1.6mm) is also commonly used 
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 5/16"(8mm), 3/8"(10mm) and 1/2"(12mm) 
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 5/16"(8mm), also available in 1/4"(6mm), 3/8"(10mm) and 1/2"(12mm) 
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 Belly Button Piercing 
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 14G(1.6mm) 
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 3/8"(10mm), 1/2"(12mm) 
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 3/8"(10mm), 1/2"(12mm) 
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 Nipple Piercing 
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 14G(1.6mm), 16G(1.2mm) 
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 1/2"(12mm), 9/16"(14mm) 
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 9/16"(14mm), also available in 5/16"(8mm), 3/8"(10mm), and 1/2"(12mm) 
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