Peter Hammwrote a review of Zipp Service Course Stem on March 5, 2015
Familiarity: I've put it through the wringer
At this price you are getting an absolute bargain. And the construction and performance of these are second to none for the price. This is really top quality stuff. Zipp discontinued this model service course design and logos in favor of a newer design/logos so these will be gone shortly. Sad, because these are perfection IMO. Stock up now while it's cheap!!!