Got my clips from American Classic. Of note: they are designed with the assumption that all dura ace cassettes have the same configuration in terms of middle cogs with only 6 splines (vs 9 splines). The CS-7900 11-25 I'm using on this wheel has only two of these 6-spline cogs with 5 cogs on the spiders and 3 top cogs with 9 splines and integrated spacing. Therefore, the clips are too wide for this cassette. A simple measurement/marking on the existing clip and a cut with a Dremel cutoff wheel and they are a perfect fit. I installed them over top of the existing cassette, since aside from the damage on the splines, the body is in great condition.