Size Charts

Thickness/Gauge

Diameter/Length

UK/Europe

1mm
1.2mm
1.6mm
2mm
2.4mm
3.2mm
4mm
5mm
6mm
8mm

USA

18ga
16ga
14ga
12ga
10ga
8ga
6ga
4ga
2ga
0ga

mm

6mm
8mm
10mm
11mm
12mm
14mm
16mm
18mm
19mm
21mm

inches

1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
11/16"
3/4"
13/16"