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Anatometal Niobium Circular Barbell

Classic style circular barbell (aka horseshoe) - a versatile choice for many larger piercings. 

Implant-grade niobium is hypoallergenic and suitable for rare cases where Titanium or Stainless Steel is not an option.  Its base colour is polished and can be heat treated to create a black colour (as shown on the balls).  This is a change to the surface and NOT a coating ensuring safe and comfortable long-term wear in new and healed body piercings.  

Treat yourself to the best body jewellery - highly acclaimed and world-leading Anatometal. This mirror-finish fine jewellery carries a lifetime guarantee.

The internal attachment system provides a gentle jewellery insertion with no exposed sharp threads to trauma the piercing fistula.  Anatometal threads come with a self-locking feature to minimise the chance of jewellery loss.  

Material: Implant/Medical Grade Niobium 
Post Type: Threaded
Internal Diameter: 9.5mm or 3/8"
Post Gauge: 1.2mm/16g or 1.6mm/14g
Ball Diameter: 3.2mm (1/8")
Suitable Piercing: Septum, nostril, helix, conch, tragus, lobe, nipple.

**Sold individually. For a pair, please order two items**

Size Guide
Size Chart



Gauge (G) /
Post Thickness


Length /
Internal Diameter

1mm = 18G 3.1mm = 1/8"
1.2mm = 16G 3.9mm = 5/32"
1.6mm = 14G 4.7mm =3/16"
2.0mm = 12G 5.5mm = 7/32"
2.4mm = 10G 6.4mm = 1/4"
3.2mm = 8G 7.1mm = 9/32"
4mm = 6G 7.9mm = 5/16"
5mm = 4G 8.7mm = 11/32"
6mm = 2G 9.5mm = 3/8"
8mm = 0G 11.1mm = 7/16"
10mm = 00G 12.7mm = 1/2"
12mm = 1/2" 14.2mm = 9/16"
14mm = 9/16" 15.8mm = 5/8"
16mm = 5/8" 17.4mm = 11/16"
18mm = 11/16" 19mm = 3/4"
20mm = 13/16" 20.6mm = 13/16"
22mm = 7/8" 22.2mm= 7/8"
See how and where to apply these measurements on our handy pictorial guide.
Size Guide
Size Chart



Gauge (G) /
Post Thickness


Length /
Internal Diameter

1mm = 18G 3.1mm = 1/8"
1.2mm = 16G 3.9mm = 5/32"
1.6mm = 14G 4.7mm =3/16"
2.0mm = 12G 5.5mm = 7/32"
2.4mm = 10G 6.4mm = 1/4"
3.2mm = 8G 7.1mm = 9/32"
4mm = 6G 7.9mm = 5/16"
5mm = 4G 8.7mm = 11/32"
6mm = 2G 9.5mm = 3/8"
8mm = 0G 11.1mm = 7/16"
10mm = 00G 12.7mm = 1/2"
12mm = 1/2" 14.2mm = 9/16"
14mm = 9/16" 15.8mm = 5/8"
16mm = 5/8" 17.4mm = 11/16"
18mm = 11/16" 19mm = 3/4"
20mm = 13/16" 20.6mm = 13/16"
22mm = 7/8" 22.2mm= 7/8"
See how and where to apply these measurements on our handy pictorial guide.