To help you with the conversion of European sizes here is a comparison matrix.
Let us know if you have any questions!
Mouthpiece Widths
Millimeters | US Size Inches |
110 | 4 ¼ |
115 | 4 ½ |
120 | 4 ¾ |
125 | 5 |
130 | 5 |
135 | 5 ¼ |
140 | 5 ½ |
145 | 5 ¾ |
Mouthpiece Diameters
Millimeters | Inches |
14 | 1/2″ |
16 | 5/8″ |
18 | 3/4″ |
21 | 7/8″ |
23 | 1″ |