In addition to this 25cm version I also have the 33cm version of the ring. Unfortunately, this is apparently not as stable 25cm how his gr. Brother. After a few litters, there was a break in the ring on the underside. Thus, the ring began to course to eggs and no longer held its trajectory. His gr. Brother is already again popped steeply in strong winds with the annular edge on asphalt and is still intact. Maybe it was a production error. Exchange problems. The immense range of 33cm ring he not ereicht course .. who 1.) long 2) wide and 3) wants to throw accurately to the 33cm ring must specify.