The Swim module helps you discover specific swimming styles and strokes. The module shown here is only available without spacer. Contact support@macu4.com if you should have any question. Configure the module here with a M12 x 1.5 (metric) or a 1/2″-20 UNF-thread (inch) and choose the color combination that you like most. See the instructions for use in English, in French, in Italien or in Dutch.