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 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.