On the photo on the left we have the standard width rim, this is the most used.
In the middle is an extra narrow rim meant for the slim chopper build.
On the right the extra wide rim for the 120 mm or 130 mm tire.

Opening hours
Tuesday to Thursday: available by phone and email. Open by appointment.
Friday: from 09:00 to 16:00
Saturday: from 10:00 to 13:00