Size Chart
US Size | Inside Diameter | Inside Circumference | UK Size |
4 | 14.88mm | 46.8mm | H |
5 | 15.70mm | 49.3mm | J ½ |
6 | 16.51mm | 51.9mm | L ½ |
7 | 17.32mm | 54.4mm | N ½ |
8 | 18.14mm | 57.0mm | P ½ |
9 | 18.95mm | 59.5mm | R ½ |
10 | 19.76mm | 62.1mm | T ½ |
11 | 20.57mm | 64.6mm | V ½ |