DT Swiss RR415 Rim is both semi-aero and exceptionally lightweight due to its own patent pending SBWT (Strength Boost Welding Technology) process. This is a new welding technique that guarantees extremely homogenous rims with exceptionally high torsional strength. Optimized U shaped profile is 21.2mm tall and 19.3mm wide stainless steel eyelets. CNC machined braking surface. You can use these rims for fast acceleration and climbing ease. 415 grams per rim. 28 or 32 hole. Black anodized.